diff --git a/eslint.config.mjs b/eslint.config.mjs
index 2f4072a188..9db2f17f9c 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -47,6 +47,9 @@ export default [
 
       parserOptions: {
         allowImportExportEverywhere: true,
+        svelteFeatures: {
+          experimentalGenerics: true,
+        },
       },
     },
 
diff --git a/packages/backend-core/src/sql/sqlTable.ts b/packages/backend-core/src/sql/sqlTable.ts
index 8e15d3d4ef..9fa062bfb6 100644
--- a/packages/backend-core/src/sql/sqlTable.ts
+++ b/packages/backend-core/src/sql/sqlTable.ts
@@ -141,19 +141,23 @@ function generateSchema(
             .references(`${tableName}.${relatedPrimary}`)
         }
         break
+      case FieldType.SIGNATURE_SINGLE:
+      case FieldType.ATTACHMENTS:
+      case FieldType.ATTACHMENT_SINGLE:
+        // single attachments are stored as an object, multi attachments
+        // are stored as an array
+        schema.json(key)
+        break
       case FieldType.FORMULA:
         // This is allowed, but nothing to do on the external datasource
         break
       case FieldType.AI:
         // This is allowed, but nothing to do on the external datasource
         break
-      case FieldType.ATTACHMENTS:
-      case FieldType.ATTACHMENT_SINGLE:
-      case FieldType.SIGNATURE_SINGLE:
       case FieldType.AUTO:
       case FieldType.JSON:
       case FieldType.INTERNAL:
-        throw `${column.type} is not a valid SQL type`
+        throw new Error(`${column.type} is not a valid SQL type`)
 
       default:
         utils.unreachable(columnType)
diff --git a/packages/bbui/src/Form/Core/Multiselect.svelte b/packages/bbui/src/Form/Core/Multiselect.svelte
index 7c4c857056..25c35f3d3c 100644
--- a/packages/bbui/src/Form/Core/Multiselect.svelte
+++ b/packages/bbui/src/Form/Core/Multiselect.svelte
@@ -20,7 +20,7 @@
   export let searchTerm: string | null = null
   export let customPopoverHeight: string | undefined = undefined
   export let open: boolean = false
-  export let loading: boolean
+  export let loading: boolean = false
   export let onOptionMouseenter = () => {}
   export let onOptionMouseleave = () => {}
 
diff --git a/packages/bbui/src/Form/DatePicker.svelte b/packages/bbui/src/Form/DatePicker.svelte
index ec3dfdfd2c..e48bf665e1 100644
--- a/packages/bbui/src/Form/DatePicker.svelte
+++ b/packages/bbui/src/Form/DatePicker.svelte
@@ -3,7 +3,7 @@
   import DatePicker from "./Core/DatePicker/DatePicker.svelte"
   import { createEventDispatcher } from "svelte"
 
-  export let value = null
+  export let value = undefined
   export let label = null
   export let labelPosition = "above"
   export let disabled = false
diff --git a/packages/bbui/src/Form/Multiselect.svelte b/packages/bbui/src/Form/Multiselect.svelte
index 9878605f4b..025cc7f536 100644
--- a/packages/bbui/src/Form/Multiselect.svelte
+++ b/packages/bbui/src/Form/Multiselect.svelte
@@ -1,29 +1,31 @@
-<script>
+<script lang="ts" generics="Option">
   import { createEventDispatcher } from "svelte"
   import Multiselect from "./Core/Multiselect.svelte"
   import Field from "./Field.svelte"
 
-  export let value = []
-  export let label = null
+  export let value: string[] | string = []
+  export let label: string | undefined = undefined
   export let disabled = false
   export let readonly = false
   export let labelPosition = "above"
-  export let error = null
-  export let placeholder = null
-  export let options = []
-  export let getOptionLabel = option => option
-  export let getOptionValue = option => option
+  export let error: string | undefined = undefined
+  export let placeholder: string | undefined = undefined
+  export let options: Option[] = []
+  export let getOptionLabel = (option: Option) => option
+  export let getOptionValue = (option: Option) => option
   export let sort = false
   export let autoWidth = false
   export let autocomplete = false
-  export let searchTerm = null
-  export let customPopoverHeight
-  export let helpText = null
+  export let searchTerm: string | undefined = undefined
+  export let customPopoverHeight: string | undefined = undefined
+  export let helpText: string | undefined = undefined
   export let onOptionMouseenter = () => {}
   export let onOptionMouseleave = () => {}
 
+  $: arrayValue = value && !Array.isArray(value) ? [value] : (value as string[])
+
   const dispatch = createEventDispatcher()
-  const onChange = e => {
+  const onChange = (e: any) => {
     value = e.detail
     dispatch("change", e.detail)
   }
@@ -31,10 +33,9 @@
 
 <Field {helpText} {label} {labelPosition} {error}>
   <Multiselect
-    {error}
     {disabled}
     {readonly}
-    {value}
+    bind:value={arrayValue}
     {options}
     {placeholder}
     {sort}
diff --git a/packages/bbui/src/Form/Toggle.svelte b/packages/bbui/src/Form/Toggle.svelte
index 1fbad949ca..6bb1cbbc75 100644
--- a/packages/bbui/src/Form/Toggle.svelte
+++ b/packages/bbui/src/Form/Toggle.svelte
@@ -3,10 +3,10 @@
   import Switch from "./Core/Switch.svelte"
   import { createEventDispatcher } from "svelte"
 
-  export let value = null
+  export let value = undefined
   export let label = null
   export let labelPosition = "above"
-  export let text = null
+  export let text = undefined
   export let disabled = false
   export let error = null
   export let helpText = null
diff --git a/packages/builder/src/components/backend/DataTable/modals/CreateEditColumn.svelte b/packages/builder/src/components/backend/DataTable/modals/CreateEditColumn.svelte
index a10f493de0..f6216a0c0b 100644
--- a/packages/builder/src/components/backend/DataTable/modals/CreateEditColumn.svelte
+++ b/packages/builder/src/components/backend/DataTable/modals/CreateEditColumn.svelte
@@ -1,40 +1,42 @@
-<script>
+<script lang="ts">
   import {
-    Input,
-    Button,
-    Label,
-    Select,
-    Multiselect,
-    Toggle,
-    Icon,
-    DatePicker,
-    Modal,
-    notifications,
-    Layout,
     AbsTooltip,
+    Button,
+    DatePicker,
+    Icon,
+    Input,
+    Label,
+    Layout,
+    Modal,
+    Multiselect,
+    notifications,
     ProgressCircle,
+    Select,
+    Toggle,
+    TooltipPosition,
+    TooltipType,
   } from "@budibase/bbui"
   import {
+    canHaveDefaultColumn,
+    helpers,
+    PROTECTED_EXTERNAL_COLUMNS,
+    PROTECTED_INTERNAL_COLUMNS,
     SWITCHABLE_TYPES,
     ValidColumnNameRegex,
-    helpers,
-    PROTECTED_INTERNAL_COLUMNS,
-    PROTECTED_EXTERNAL_COLUMNS,
-    canHaveDefaultColumn,
   } from "@budibase/shared-core"
   import { makePropSafe } from "@budibase/string-templates"
   import { createEventDispatcher, getContext, onMount } from "svelte"
   import { cloneDeep } from "lodash/fp"
-  import { tables, datasources } from "@/stores/builder"
+  import { datasources, tables } from "@/stores/builder"
   import { licensing } from "@/stores/portal"
   import { TableNames, UNEDITABLE_USER_FIELDS } from "@/constants"
   import {
-    FIELDS,
-    RelationshipType,
-    PrettyRelationshipDefinitions,
     DB_TYPE_EXTERNAL,
+    FIELDS,
+    PrettyRelationshipDefinitions,
+    RelationshipType,
   } from "@/constants/backend"
-  import { getAutoColumnInformation, buildAutoColumn } from "@/helpers/utils"
+  import { buildAutoColumn, getAutoColumnInformation } from "@/helpers/utils"
   import ConfirmDialog from "@/components/common/ConfirmDialog.svelte"
   import AIFieldConfiguration from "@/components/common/AIFieldConfiguration.svelte"
   import ModalBindableInput from "@/components/common/bindings/ModalBindableInput.svelte"
@@ -43,42 +45,52 @@
   import {
     BBReferenceFieldSubType,
     FieldType,
+    FormulaType,
     SourceName,
   } from "@budibase/types"
   import RelationshipSelector from "@/components/common/RelationshipSelector.svelte"
-  import { RowUtils, canBeDisplayColumn } from "@budibase/frontend-core"
+  import { canBeDisplayColumn, RowUtils } from "@budibase/frontend-core"
   import ServerBindingPanel from "@/components/common/bindings/ServerBindingPanel.svelte"
   import OptionsEditor from "./OptionsEditor.svelte"
   import { getUserBindings } from "@/dataBinding"
+  import type {
+    Table,
+    Datasource,
+    FieldSchema,
+    UIField,
+    AutoFieldSubType,
+    FormulaResponseType,
+    FieldSchemaConfig,
+  } from "@budibase/types"
 
-  export let field
+  export let field: FieldSchema
 
   const dispatch = createEventDispatcher()
-  const { dispatch: gridDispatch, rows } = getContext("grid")
+  const { dispatch: gridDispatch, rows } = getContext("grid") as any
   const SafeID = `${makePropSafe("user")}.${makePropSafe("_id")}`
   const SingleUserDefault = `{{ ${SafeID} }}`
   const MultiUserDefault = `{{ js "${btoa(`return [$("${SafeID}")]`)}" }}`
 
   let mounted = false
-  let originalName
-  let linkEditDisabled
-  let primaryDisplay
-  let indexes = [...($tables.selected.indexes || [])]
-  let isCreating = undefined
+  let originalName: string | undefined
+  let linkEditDisabled: boolean = false
+  let hasPrimaryDisplay: boolean
+  let isCreating: boolean | undefined
   let relationshipPart1 = PrettyRelationshipDefinitions.MANY
   let relationshipPart2 = PrettyRelationshipDefinitions.ONE
-  let relationshipTableIdPrimary = null
-  let relationshipTableIdSecondary = null
-  let table = $tables.selected
-  let confirmDeleteDialog
-  let savingColumn
-  let deleteColName
-  let jsonSchemaModal
-  let editableColumn = {
-    type: FIELDS.STRING.type,
-    constraints: FIELDS.STRING.constraints,
+  let relationshipTableIdPrimary: string | undefined
+  let relationshipTableIdSecondary: string | undefined
+  let table: Table | undefined = $tables.selected
+  let confirmDeleteDialog: any
+  let savingColumn: boolean
+  let deleteColName: string | undefined
+  let jsonSchemaModal: any
+  let editableColumn: FieldSchemaConfig = {
+    type: FieldType.STRING,
+    constraints: FIELDS.STRING.constraints as any,
+    name: "",
     // Initial value for column name in other table for linked records
-    fieldName: $tables.selected.name,
+    fieldName: $tables.selected?.name || "",
   }
   let relationshipOpts1 = Object.values(PrettyRelationshipDefinitions)
   let relationshipOpts2 = Object.values(PrettyRelationshipDefinitions)
@@ -99,17 +111,42 @@
   const autoColumnInfo = getAutoColumnInformation()
   let optionsValid = true
 
+  // a fixed order for the types to stop them moving around
+  // we've never really guaranteed an order to these, which means that
+  // they can move around very easily
+  const fixedTypeOrder = [
+    FIELDS.STRING,
+    FIELDS.NUMBER,
+    FIELDS.OPTIONS,
+    FIELDS.ARRAY,
+    FIELDS.BOOLEAN,
+    FIELDS.DATETIME,
+    FIELDS.LINK,
+    FIELDS.AI,
+    FIELDS.LONGFORM,
+    FIELDS.USER,
+    FIELDS.USERS,
+    FIELDS.ATTACHMENT_SINGLE,
+    FIELDS.ATTACHMENTS,
+    FIELDS.FORMULA,
+    FIELDS.JSON,
+    FIELDS.BARCODEQR,
+    FIELDS.SIGNATURE_SINGLE,
+    FIELDS.BIGINT,
+    FIELDS.AUTO,
+  ]
+
   $: rowGoldenSample = RowUtils.generateGoldenSample($rows)
   $: aiEnabled =
-    $licensing.customAIConfigsEnabled || $licensing.budibaseAiEnabled
-  $: if (primaryDisplay) {
+    $licensing.customAIConfigsEnabled || $licensing.budibaseAIEnabled
+  $: if (hasPrimaryDisplay && editableColumn.constraints) {
     editableColumn.constraints.presence = { allowEmpty: false }
   }
   $: {
     // this parses any changes the user has made when creating a new internal relationship
     // into what we expect the schema to look like
     if (editableColumn.type === FieldType.LINK) {
-      relationshipTableIdPrimary = table._id
+      relationshipTableIdPrimary = table?._id
       if (relationshipPart1 === PrettyRelationshipDefinitions.ONE) {
         relationshipOpts2 = relationshipOpts2.filter(
           opt => opt !== PrettyRelationshipDefinitions.ONE
@@ -129,36 +166,44 @@
       editableColumn.relationshipType = Object.entries(relationshipMap).find(
         ([_, parts]) =>
           parts.part1 === relationshipPart1 && parts.part2 === relationshipPart2
-      )?.[0]
-      // Set the tableId based on the selected table
-      editableColumn.tableId = relationshipTableIdSecondary
+      )?.[0] as RelationshipType
+      if (relationshipTableIdSecondary) {
+        // Set the tableId based on the selected table
+        editableColumn.tableId = relationshipTableIdSecondary
+      }
     }
   }
   $: initialiseField(field, savingColumn)
   $: checkConstraints(editableColumn)
   $: required =
-    primaryDisplay ||
+    hasPrimaryDisplay ||
     editableColumn?.constraints?.presence === true ||
-    editableColumn?.constraints?.presence?.allowEmpty === false
+    (editableColumn?.constraints?.presence as any)?.allowEmpty === false
   $: uneditable =
     $tables.selected?._id === TableNames.USERS &&
-    UNEDITABLE_USER_FIELDS.includes(editableColumn.name)
+    UNEDITABLE_USER_FIELDS.includes(editableColumn.name || "")
   $: invalid =
     !editableColumn?.name ||
     (editableColumn?.type === FieldType.LINK && !editableColumn?.tableId) ||
-    Object.keys(errors).length !== 0 ||
+    Object.keys(errors || {}).length !== 0 ||
     !optionsValid
   $: errors = checkErrors(editableColumn)
   $: datasource = $datasources.list.find(
     source => source._id === table?.sourceId
-  )
+  ) as Datasource | undefined
   $: tableAutoColumnsTypes = getTableAutoColumnTypes($tables?.selected)
-  $: availableAutoColumns = Object.keys(autoColumnInfo).reduce((acc, key) => {
-    if (!tableAutoColumnsTypes.includes(key)) {
-      acc[key] = autoColumnInfo[key]
-    }
-    return acc
-  }, {})
+  $: availableAutoColumns = Object.keys(autoColumnInfo).reduce(
+    (acc: Record<string, { enabled: boolean; name: string }>, key: string) => {
+      if (!tableAutoColumnsTypes.includes(key)) {
+        const subtypeKey = key as AutoFieldSubType
+        if (autoColumnInfo[subtypeKey]) {
+          acc[key] = autoColumnInfo[subtypeKey]
+        }
+      }
+      return acc
+    },
+    {}
+  )
   $: availableAutoColumnKeys = availableAutoColumns
     ? Object.keys(availableAutoColumns)
     : []
@@ -176,21 +221,26 @@
     !editableColumn.autocolumn
   $: hasDefault =
     editableColumn?.default != null && editableColumn?.default !== ""
-  $: externalTable = table.sourceType === DB_TYPE_EXTERNAL
+  $: isExternalTable = table?.sourceType === DB_TYPE_EXTERNAL
   // in the case of internal tables the sourceId will just be undefined
   $: tableOptions = $tables.list.filter(
     opt =>
-      opt.sourceType === table.sourceType && table.sourceId === opt.sourceId
+      opt.sourceType === table?.sourceType && table.sourceId === opt.sourceId
   )
   $: typeEnabled =
     !originalName ||
     (originalName &&
       SWITCHABLE_TYPES[field.type] &&
       !editableColumn?.autocolumn)
-  $: allowedTypes = getAllowedTypes(datasource).map(t => ({
-    fieldId: makeFieldId(t.type, t.subtype),
-    ...t,
-  }))
+  $: allowedTypes = getAllowedTypes(datasource, table)
+  $: orderedAllowedTypes = fixedTypeOrder
+    .filter(ordered =>
+      allowedTypes.find(allowed => allowed.type === ordered.type)
+    )
+    .map(t => ({
+      fieldId: makeFieldId(t.type, t.subtype),
+      ...t,
+    }))
   $: defaultValueBindings = [
     {
       type: "context",
@@ -210,7 +260,23 @@
     editableColumn.default
   )
 
-  const fieldDefinitions = Object.values(FIELDS).reduce(
+  const allTableFields = [
+    FIELDS.STRING,
+    FIELDS.NUMBER,
+    FIELDS.OPTIONS,
+    FIELDS.ARRAY,
+    FIELDS.BOOLEAN,
+    FIELDS.DATETIME,
+    FIELDS.LINK,
+    FIELDS.LONGFORM,
+    FIELDS.FORMULA,
+    FIELDS.BARCODEQR,
+    FIELDS.BIGINT,
+  ]
+
+  const fieldDefinitions: Record<string, UIField> = Object.values(
+    FIELDS
+  ).reduce(
     // Storing the fields by complex field id
     (acc, field) => ({
       ...acc,
@@ -219,7 +285,7 @@
     {}
   )
 
-  function makeFieldId(type, subtype, autocolumn) {
+  function makeFieldId(type: string, subtype?: string, autocolumn?: boolean) {
     // don't make field IDs for auto types
     if (type === FieldType.AUTO || autocolumn) {
       return type.toUpperCase()
@@ -233,23 +299,29 @@
     }
   }
 
-  const initialiseField = (field, savingColumn) => {
+  const initialiseField = (
+    field: FieldSchema | undefined,
+    savingColumn: boolean
+  ) => {
     isCreating = !field
     if (field && !savingColumn) {
-      editableColumn = cloneDeep(field)
-      originalName = editableColumn.name ? editableColumn.name + "" : null
+      editableColumn = cloneDeep(field) as FieldSchemaConfig
+      originalName = editableColumn.name ? editableColumn.name + "" : undefined
       linkEditDisabled = originalName != null
-      primaryDisplay =
-        $tables.selected.primaryDisplay == null ||
-        $tables.selected.primaryDisplay === editableColumn.name
+      hasPrimaryDisplay =
+        $tables.selected?.primaryDisplay == null ||
+        $tables.selected?.primaryDisplay === editableColumn.name
 
       // Here we are setting the relationship values based on the editableColumn
       // This part of the code is used when viewing an existing field hence the check
       // for the tableId
       if (editableColumn.type === FieldType.LINK && editableColumn.tableId) {
-        relationshipTableIdPrimary = table._id
+        relationshipTableIdPrimary = table?._id
         relationshipTableIdSecondary = editableColumn.tableId
-        if (editableColumn.relationshipType in relationshipMap) {
+        if (
+          editableColumn.relationshipType &&
+          editableColumn.relationshipType in relationshipMap
+        ) {
           const { part1, part2 } =
             relationshipMap[editableColumn.relationshipType]
           relationshipPart1 = part1
@@ -267,18 +339,21 @@
     }
   }
 
-  const getTableAutoColumnTypes = table => {
-    return Object.keys(table?.schema).reduce((acc, key) => {
-      let fieldSchema = table?.schema[key]
-      if (fieldSchema.autocolumn) {
-        acc.push(fieldSchema.subtype)
-      }
-      return acc
-    }, [])
+  const getTableAutoColumnTypes = (table: Table | undefined) => {
+    return Object.keys(table?.schema || {}).reduce(
+      (acc: string[], key: string) => {
+        let fieldSchema = table?.schema[key]
+        if (fieldSchema?.autocolumn && fieldSchema?.subtype) {
+          acc.push(fieldSchema.subtype)
+        }
+        return acc
+      },
+      []
+    )
   }
 
   async function saveColumn() {
-    if (errors?.length) {
+    if (Object.keys(errors || {}).length) {
       return
     }
 
@@ -287,14 +362,18 @@
 
     delete saveColumn.fieldId
 
-    if (saveColumn.type === FieldType.AUTO) {
+    if (
+      $tables.selected &&
+      saveColumn.name &&
+      saveColumn.type === FieldType.AUTO
+    ) {
       saveColumn = buildAutoColumn(
         $tables.selected.name,
         saveColumn.name,
-        saveColumn.subtype
-      )
+        saveColumn.subtype as AutoFieldSubType
+      ) as FieldSchemaConfig
     }
-    if (saveColumn.type !== FieldType.LINK) {
+    if ("fieldName" in saveColumn && saveColumn.type !== FieldType.LINK) {
       delete saveColumn.fieldName
     }
 
@@ -304,22 +383,21 @@
     }
 
     // Ensure primary display columns are always required and don't have default values
-    if (primaryDisplay) {
-      saveColumn.constraints.presence = { allowEmpty: false }
+    if (hasPrimaryDisplay) {
+      saveColumn.constraints!.presence = { allowEmpty: false }
       delete saveColumn.default
     }
 
     // Ensure the field is not required if we have a default value
     if (saveColumn.default) {
-      saveColumn.constraints.presence = false
+      saveColumn.constraints!.presence = false
     }
 
     try {
       await tables.saveField({
         originalName,
-        field: saveColumn,
-        primaryDisplay,
-        indexes,
+        field: saveColumn as FieldSchema,
+        hasPrimaryDisplay,
       })
       dispatch("updatecolumns")
       gridDispatch("close-edit-column")
@@ -329,7 +407,7 @@
       } else {
         notifications.success("Column created successfully")
       }
-    } catch (err) {
+    } catch (err: any) {
       notifications.error(`Error saving column: ${err.message}`)
     } finally {
       savingColumn = false
@@ -337,65 +415,83 @@
   }
 
   function cancelEdit() {
-    editableColumn.name = originalName
+    if (originalName) {
+      editableColumn.name = originalName
+    }
     gridDispatch("close-edit-column")
   }
 
   async function deleteColumn() {
     try {
-      editableColumn.name = deleteColName
-      if (editableColumn.name === $tables.selected.primaryDisplay) {
+      if (deleteColName) {
+        editableColumn.name = deleteColName
+      }
+      if (editableColumn.name === $tables.selected?.primaryDisplay) {
         notifications.error("You cannot delete the display column")
       } else {
-        await tables.deleteField(editableColumn)
+        await tables.deleteField({ name: editableColumn.name! })
         notifications.success(`Column ${editableColumn.name} deleted`)
         confirmDeleteDialog.hide()
         dispatch("updatecolumns")
         gridDispatch("close-edit-column")
       }
-    } catch (error) {
+    } catch (error: any) {
       notifications.error(`Error deleting column: ${error.message}`)
     }
   }
 
-  function onHandleTypeChange(event) {
+  function onHandleTypeChange(event: any) {
     handleTypeChange(event.detail)
   }
 
-  function handleTypeChange(type) {
+  function handleTypeChange(type?: string) {
     // remove any extra fields that may not be related to this type
-    delete editableColumn.autocolumn
-    delete editableColumn.subtype
-    delete editableColumn.tableId
-    delete editableColumn.relationshipType
-    delete editableColumn.formulaType
-    delete editableColumn.constraints
-    delete editableColumn.responseType
+    const columnsToClear = [
+      "autocolumn",
+      "subtype",
+      "tableId",
+      "relationshipType",
+      "formulaType",
+      "responseType",
+    ]
+    for (let column of columnsToClear) {
+      if (column in editableColumn) {
+        delete editableColumn[column as keyof FieldSchema]
+      }
+    }
+    editableColumn.constraints = {}
 
     // Add in defaults and initial definition
-    const definition = fieldDefinitions[type?.toUpperCase()]
+    const definition = fieldDefinitions[type?.toUpperCase() || ""]
     if (definition?.constraints) {
       editableColumn.constraints = cloneDeep(definition.constraints)
     }
 
     editableColumn.type = definition.type
-    editableColumn.subtype = definition.subtype
+    if (definition.subtype) {
+      // @ts-expect-error the setting of sub-type here doesn't fit our definition with
+      // FieldSchema, there is no type checking, it simply sets it if it is provided
+      editableColumn.subtype = definition.subtype
+    }
 
     // Default relationships many to many
     if (editableColumn.type === FieldType.LINK) {
       editableColumn.relationshipType = RelationshipType.MANY_TO_MANY
     } else if (editableColumn.type === FieldType.FORMULA) {
-      editableColumn.formulaType = "dynamic"
-      editableColumn.responseType = field?.responseType || FIELDS.STRING.type
+      editableColumn.formulaType = FormulaType.DYNAMIC
+      editableColumn.responseType =
+        field && "responseType" in field
+          ? field.responseType
+          : (FIELDS.STRING.type as FormulaResponseType)
     }
   }
 
-  function setRequired(req) {
-    editableColumn.constraints.presence = req ? { allowEmpty: false } : false
+  function setRequired(req: boolean) {
+    editableColumn.constraints!.presence = req ? { allowEmpty: false } : false
     required = req
   }
 
-  function onChangeRequired(e) {
+  function onChangeRequired(e: any) {
     setRequired(e.detail)
   }
 
@@ -412,10 +508,21 @@
     deleteColName = ""
   }
 
-  function getAllowedTypes(datasource) {
+  function getAllowedTypes(
+    datasource: Datasource | undefined,
+    table: Table | undefined
+  ): UIField[] {
+    const isSqlTable = table?.sql
+    const isGoogleSheet =
+      table?.sourceType === DB_TYPE_EXTERNAL &&
+      datasource?.source === SourceName.GOOGLE_SHEETS
     if (originalName) {
       let possibleTypes = SWITCHABLE_TYPES[field.type] || [editableColumn.type]
-      if (helpers.schema.isDeprecatedSingleUserColumn(editableColumn)) {
+      if (
+        helpers.schema.isDeprecatedSingleUserColumn(
+          editableColumn as FieldSchema
+        )
+      ) {
         // This will handle old single users columns
         return [
           {
@@ -442,60 +549,43 @@
         .map(([_, fieldDefinition]) => fieldDefinition)
     }
 
-    if (!externalTable) {
-      return [
-        FIELDS.STRING,
-        FIELDS.NUMBER,
-        FIELDS.OPTIONS,
-        FIELDS.ARRAY,
-        FIELDS.BOOLEAN,
-        FIELDS.DATETIME,
-        FIELDS.LINK,
-        ...(aiEnabled ? [FIELDS.AI] : []),
-        FIELDS.LONGFORM,
+    if (!isExternalTable) {
+      const fields = [
+        ...allTableFields,
         FIELDS.USER,
         FIELDS.USERS,
         FIELDS.ATTACHMENT_SINGLE,
         FIELDS.ATTACHMENTS,
-        FIELDS.FORMULA,
-        FIELDS.JSON,
-        FIELDS.BARCODEQR,
         FIELDS.SIGNATURE_SINGLE,
-        FIELDS.BIGINT,
+        FIELDS.JSON,
         FIELDS.AUTO,
       ]
-    } else {
-      let fields = [
-        FIELDS.STRING,
-        FIELDS.NUMBER,
-        FIELDS.OPTIONS,
-        FIELDS.ARRAY,
-        FIELDS.BOOLEAN,
-        FIELDS.DATETIME,
-        FIELDS.LINK,
-        FIELDS.LONGFORM,
-        FIELDS.USER,
-        FIELDS.USERS,
-        FIELDS.FORMULA,
-        FIELDS.BARCODEQR,
-        FIELDS.BIGINT,
-      ]
-
-      // Filter out multiple users for google sheets
-      if (datasource?.source === SourceName.GOOGLE_SHEETS) {
-        fields = fields.filter(x => x !== FIELDS.USERS)
+      if (aiEnabled) {
+        fields.push(FIELDS.AI)
       }
-
-      // Filter out SQL-specific types for non-SQL datasources
-      if (!table.sql) {
-        fields = fields.filter(x => x !== FIELDS.LINK && x !== FIELDS.ARRAY)
-      }
-
       return fields
     }
+    if (isExternalTable && isSqlTable) {
+      return [
+        ...allTableFields,
+        FIELDS.USER,
+        FIELDS.USERS,
+        FIELDS.ATTACHMENT_SINGLE,
+        FIELDS.ATTACHMENTS,
+        FIELDS.SIGNATURE_SINGLE,
+      ]
+    } else if (isExternalTable && isGoogleSheet) {
+      // google-sheets supports minimum set (no attachments or user references)
+      return allTableFields
+    } else if (isExternalTable && !isSqlTable) {
+      // filter out SQL-specific types for non-SQL datasources
+      return allTableFields.filter(x => x !== FIELDS.LINK && x !== FIELDS.ARRAY)
+    }
+
+    throw new Error("No valid allowed types found")
   }
 
-  function checkConstraints(fieldToCheck) {
+  function checkConstraints(fieldToCheck: FieldSchema) {
     if (!fieldToCheck) {
       return
     }
@@ -526,11 +616,11 @@
     }
   }
 
-  function checkErrors(fieldInfo) {
+  function checkErrors(fieldInfo: FieldSchema) {
     if (!editableColumn) {
-      return {}
+      return
     }
-    function inUse(tbl, column, ogName = null) {
+    function inUse(tbl?: Table, column?: string, ogName?: string) {
       const parsedColumn = column ? column.toLowerCase().trim() : column
 
       return Object.keys(tbl?.schema || {}).some(key => {
@@ -538,11 +628,12 @@
         return lowerKey !== ogName?.toLowerCase() && lowerKey === parsedColumn
       })
     }
-    const newError = {}
-    const prohibited = externalTable
+    const newError: { name?: string; subtype?: string; relatedName?: string } =
+      {}
+    const prohibited = isExternalTable
       ? PROTECTED_EXTERNAL_COLUMNS
       : PROTECTED_INTERNAL_COLUMNS
-    if (!externalTable && fieldInfo.name?.startsWith("_")) {
+    if (!isExternalTable && fieldInfo.name?.startsWith("_")) {
       newError.name = `Column name cannot start with an underscore.`
     } else if (fieldInfo.name && !fieldInfo.name.match(ValidColumnNameRegex)) {
       newError.name = `Illegal character; must be alpha-numeric.`
@@ -558,31 +649,52 @@
       newError.subtype = `Auto Column requires a type.`
     }
 
-    if (fieldInfo.fieldName && fieldInfo.tableId) {
+    if (
+      fieldInfo.type === FieldType.LINK &&
+      fieldInfo.fieldName &&
+      fieldInfo.tableId
+    ) {
       const relatedTable = $tables.list.find(
         tbl => tbl._id === fieldInfo.tableId
       )
       if (inUse(relatedTable, fieldInfo.fieldName) && !originalName) {
-        newError.relatedName = `Column name already in use in table ${relatedTable.name}`
+        newError.relatedName = `Column name already in use in table ${relatedTable?.name}`
       }
     }
     return newError
   }
 
-  const sanitiseDefaultValue = (type, options, defaultValue) => {
+  const sanitiseDefaultValue = (
+    type: FieldType,
+    options: string[],
+    defaultValue?: string[] | string
+  ) => {
     if (!defaultValue?.length) {
       return
     }
     // Delete default value for options fields if the option is no longer available
-    if (type === FieldType.OPTIONS && !options.includes(defaultValue)) {
+    if (
+      type === FieldType.OPTIONS &&
+      typeof defaultValue === "string" &&
+      !options.includes(defaultValue)
+    ) {
       delete editableColumn.default
     }
     // Filter array default values to only valid options
-    if (type === FieldType.ARRAY) {
+    if (type === FieldType.ARRAY && Array.isArray(defaultValue)) {
       editableColumn.default = defaultValue.filter(x => options.includes(x))
     }
   }
 
+  function handleNameInput(evt: any) {
+    if (
+      !uneditable &&
+      !(linkEditDisabled && editableColumn.type === FieldType.LINK)
+    ) {
+      editableColumn.name = evt.target.value
+    }
+  }
+
   onMount(() => {
     mounted = true
   })
@@ -593,25 +705,18 @@
     <Input
       value={editableColumn.name}
       autofocus
-      on:input={e => {
-        if (
-          !uneditable &&
-          !(linkEditDisabled && editableColumn.type === FieldType.LINK)
-        ) {
-          editableColumn.name = e.target.value
-        }
-      }}
+      on:input={handleNameInput}
       disabled={uneditable ||
         (linkEditDisabled && editableColumn.type === FieldType.LINK)}
       error={errors?.name}
     />
   {/if}
   <Select
-    placeholder={null}
+    placeholder={undefined}
     disabled={!typeEnabled}
     bind:value={editableColumn.fieldId}
     on:change={onHandleTypeChange}
-    options={allowedTypes}
+    options={orderedAllowedTypes}
     getOptionLabel={field => field.name}
     getOptionValue={field => field.fieldId}
     getOptionIcon={field => field.icon}
@@ -623,7 +728,7 @@
     }}
   />
 
-  {#if editableColumn.type === FieldType.STRING}
+  {#if editableColumn.type === FieldType.STRING && editableColumn.constraints.length}
     <Input
       type="number"
       label="Max Length"
@@ -640,8 +745,8 @@
       <div class="tooltip-alignment">
         <Label size="M">Formatting</Label>
         <AbsTooltip
-          position="top"
-          type="info"
+          position={TooltipPosition.Top}
+          type={TooltipType.Info}
           text={"Rich text includes support for images, link"}
         >
           <Icon size="XS" name="InfoOutline" />
@@ -664,26 +769,30 @@
       <div class="label-length">
         <Label size="M">Earliest</Label>
       </div>
-      <div class="input-length">
-        <DatePicker
-          bind:value={editableColumn.constraints.datetime.earliest}
-          enableTime={!editableColumn.dateOnly}
-          timeOnly={editableColumn.timeOnly}
-        />
-      </div>
+      {#if editableColumn.constraints.datetime}
+        <div class="input-length">
+          <DatePicker
+            bind:value={editableColumn.constraints.datetime.earliest}
+            enableTime={!editableColumn.dateOnly}
+            timeOnly={editableColumn.timeOnly}
+          />
+        </div>
+      {/if}
     </div>
 
     <div class="split-label">
       <div class="label-length">
         <Label size="M">Latest</Label>
       </div>
-      <div class="input-length">
-        <DatePicker
-          bind:value={editableColumn.constraints.datetime.latest}
-          enableTime={!editableColumn.dateOnly}
-          timeOnly={editableColumn.timeOnly}
-        />
-      </div>
+      {#if editableColumn.constraints.datetime}
+        <div class="input-length">
+          <DatePicker
+            bind:value={editableColumn.constraints.datetime.latest}
+            enableTime={!editableColumn.dateOnly}
+            timeOnly={editableColumn.timeOnly}
+          />
+        </div>
+      {/if}
     </div>
     {#if !editableColumn.timeOnly}
       {#if datasource?.source !== SourceName.ORACLE && datasource?.source !== SourceName.SQL_SERVER && !editableColumn.dateOnly}
@@ -691,10 +800,10 @@
           <div class="row">
             <Label>Time zones</Label>
             <AbsTooltip
-              position="top"
-              type="info"
+              position={TooltipPosition.Top}
+              type={TooltipType.Info}
               text={isCreating
-                ? null
+                ? undefined
                 : "We recommend not changing how timezones are handled for existing columns, as existing data will not be updated"}
             >
               <Icon size="XS" name="InfoOutline" />
@@ -713,25 +822,30 @@
       <div class="label-length">
         <Label size="M">Min Value</Label>
       </div>
-      <div class="input-length">
-        <Input
-          type="number"
-          bind:value={editableColumn.constraints.numericality
-            .greaterThanOrEqualTo}
-        />
-      </div>
+      {#if editableColumn.constraints.numericality}
+        <div class="input-length">
+          <Input
+            type="number"
+            bind:value={editableColumn.constraints.numericality
+              .greaterThanOrEqualTo}
+          />
+        </div>
+      {/if}
     </div>
 
     <div class="split-label">
       <div class="label-length">
         <Label size="M">Max Value</Label>
       </div>
-      <div class="input-length">
-        <Input
-          type="number"
-          bind:value={editableColumn.constraints.numericality.lessThanOrEqualTo}
-        />
-      </div>
+      {#if editableColumn.constraints.numericality}
+        <div class="input-length">
+          <Input
+            type="number"
+            bind:value={editableColumn.constraints.numericality
+              .lessThanOrEqualTo}
+          />
+        </div>
+      {/if}
     </div>
   {:else if editableColumn.type === FieldType.LINK && !editableColumn.autocolumn}
     <RelationshipSelector
@@ -747,7 +861,7 @@
       {errors}
     />
   {:else if editableColumn.type === FieldType.FORMULA}
-    {#if !externalTable}
+    {#if !isExternalTable}
       <div class="split-label">
         <div class="label-length">
           <Label size="M">Formula Type</Label>
@@ -797,9 +911,11 @@
           title="Formula"
           value={editableColumn.formula}
           on:change={e => {
-            editableColumn = {
-              ...editableColumn,
-              formula: e.detail,
+            if (editableColumn.type === FieldType.FORMULA) {
+              editableColumn = {
+                ...editableColumn,
+                formula: e.detail,
+              }
             }
           }}
           bindings={getBindings({ table })}
@@ -808,7 +924,7 @@
         />
       </div>
     </div>
-  {:else if editableColumn.type === FieldType.AI}
+  {:else if editableColumn.type === FieldType.AI && table}
     <AIFieldConfiguration
       aiField={editableColumn}
       context={rowGoldenSample}
@@ -816,9 +932,7 @@
       schema={table.schema}
     />
   {:else if editableColumn.type === FieldType.JSON}
-    <Button primary text on:click={openJsonSchemaEditor}>
-      Open schema editor
-    </Button>
+    <Button primary on:click={openJsonSchemaEditor}>Open schema editor</Button>
   {/if}
   {#if editableColumn.type === FieldType.AUTO || editableColumn.autocolumn}
     <Select
@@ -839,8 +953,7 @@
         <Toggle
           value={required}
           on:change={onChangeRequired}
-          disabled={primaryDisplay || hasDefault}
-          thin
+          disabled={hasPrimaryDisplay || hasDefault}
           text="Required"
         />
       {/if}
@@ -895,7 +1008,7 @@
 
 <div class="action-buttons">
   {#if !uneditable && originalName != null}
-    <Button quiet warning text on:click={confirmDelete}>Delete</Button>
+    <Button quiet warning on:click={confirmDelete}>Delete</Button>
   {/if}
   <Button secondary newStyles on:click={cancelEdit}>Cancel</Button>
   <Button
diff --git a/packages/builder/src/components/common/RelationshipSelector.svelte b/packages/builder/src/components/common/RelationshipSelector.svelte
index 5e840d4ffb..2e9038ee41 100644
--- a/packages/builder/src/components/common/RelationshipSelector.svelte
+++ b/packages/builder/src/components/common/RelationshipSelector.svelte
@@ -11,8 +11,8 @@
   export let errors
   export let relationshipOpts1
   export let relationshipOpts2
-  export let primaryTableChanged
-  export let secondaryTableChanged
+  export let primaryTableChanged = undefined
+  export let secondaryTableChanged = undefined
   export let primaryDisabled = true
 </script>
 
diff --git a/packages/builder/src/constants/backend/index.ts b/packages/builder/src/constants/backend/index.ts
index 0a1e6b8740..ef72722356 100644
--- a/packages/builder/src/constants/backend/index.ts
+++ b/packages/builder/src/constants/backend/index.ts
@@ -6,6 +6,7 @@ import {
   Hosting,
 } from "@budibase/types"
 import { Constants } from "@budibase/frontend-core"
+import { UIField } from "@budibase/types"
 
 const { TypeIconMap } = Constants
 
@@ -27,7 +28,7 @@ export const AUTO_COLUMN_DISPLAY_NAMES: Record<
   UPDATED_AT: "Updated At",
 }
 
-export const FIELDS = {
+export const FIELDS: Record<string, UIField> = {
   STRING: {
     name: "Text",
     type: FieldType.STRING,
diff --git a/packages/builder/src/stores/builder/tables.ts b/packages/builder/src/stores/builder/tables.ts
index e38731026c..6a539dc893 100644
--- a/packages/builder/src/stores/builder/tables.ts
+++ b/packages/builder/src/stores/builder/tables.ts
@@ -148,13 +148,11 @@ export class TableStore extends DerivedBudiStore<
   async saveField({
     originalName,
     field,
-    primaryDisplay = false,
-    indexes,
+    hasPrimaryDisplay = false,
   }: {
-    originalName: string
+    originalName?: string
     field: FieldSchema
-    primaryDisplay: boolean
-    indexes: Record<string, any>
+    hasPrimaryDisplay: boolean
   }) {
     const draft: SaveTableRequest = cloneDeep(get(this.derivedStore).selected!)
 
@@ -169,7 +167,7 @@ export class TableStore extends DerivedBudiStore<
     }
 
     // Optionally set display column
-    if (primaryDisplay) {
+    if (hasPrimaryDisplay) {
       draft.primaryDisplay = field.name
     } else if (draft.primaryDisplay === originalName) {
       const fields = Object.keys(draft.schema)
@@ -178,9 +176,6 @@ export class TableStore extends DerivedBudiStore<
         name => name !== originalName || name !== field.name
       )[0]
     }
-    if (indexes) {
-      draft.indexes = indexes
-    }
     draft.schema = {
       ...draft.schema,
       [field.name]: cloneDeep(field),
diff --git a/packages/client/src/components/app/forms/RelationshipField.svelte b/packages/client/src/components/app/forms/RelationshipField.svelte
index 41a9614843..6fa7b32621 100644
--- a/packages/client/src/components/app/forms/RelationshipField.svelte
+++ b/packages/client/src/components/app/forms/RelationshipField.svelte
@@ -1,10 +1,9 @@
 <script context="module" lang="ts">
-  type ValueType = string | string[]
   type BasicRelatedRow = { _id: string; primaryDisplay: string }
   type OptionsMap = Record<string, BasicRelatedRow>
 </script>
 
-<script lang="ts">
+<script lang="ts" generics="ValueType extends string | string[]">
   import { CoreSelect, CoreMultiselect } from "@budibase/bbui"
   import {
     BasicOperator,
@@ -67,7 +66,7 @@
     fieldSchema?.relationshipType !== "one-to-many"
 
   // Get the proper string representation of the value
-  $: realValue = fieldState?.value
+  $: realValue = fieldState?.value as ValueType
   $: selectedValue = parseSelectedValue(realValue, multiselect)
   $: selectedIDs = getSelectedIDs(selectedValue)
 
diff --git a/packages/server/src/api/controllers/oauth2.ts b/packages/server/src/api/controllers/oauth2.ts
index 6447d60f0b..5ba84feb7b 100644
--- a/packages/server/src/api/controllers/oauth2.ts
+++ b/packages/server/src/api/controllers/oauth2.ts
@@ -75,3 +75,28 @@ export async function remove(
   await sdk.oauth2.remove(configToRemove)
   ctx.status = 204
 }
+
+export async function edit(
+  ctx: Ctx<UpsertOAuth2ConfigRequest, UpsertOAuth2ConfigResponse>
+) {
+  const { body } = ctx.request
+  const toUpdate: RequiredKeys<OAuth2Config> = {
+    id: ctx.params.id,
+    name: body.name,
+    url: body.url,
+    clientId: ctx.clientId,
+    clientSecret: ctx.clientSecret,
+  }
+
+  const config = await sdk.oauth2.update(toUpdate)
+  ctx.body = { config }
+}
+
+export async function remove(
+  ctx: Ctx<UpsertOAuth2ConfigRequest, UpsertOAuth2ConfigResponse>
+) {
+  const configToRemove = ctx.params.id
+
+  await sdk.oauth2.remove(configToRemove)
+  ctx.status = 204
+}
diff --git a/packages/server/src/api/routes/tests/oauth2.spec.ts b/packages/server/src/api/routes/tests/oauth2.spec.ts
index 218d1d407d..ca5b28005d 100644
--- a/packages/server/src/api/routes/tests/oauth2.spec.ts
+++ b/packages/server/src/api/routes/tests/oauth2.spec.ts
@@ -182,7 +182,9 @@ describe("/oauth2", () => {
         },
         {
           status: 400,
-          body: { message: "Name is not available." },
+          body: {
+            message: `OAuth2 config with name '${config2.name}' is already taken.`,
+          },
         }
       )
     })
diff --git a/packages/server/src/api/routes/tests/row.spec.ts b/packages/server/src/api/routes/tests/row.spec.ts
index 1ee0e168a1..e910e5ab55 100644
--- a/packages/server/src/api/routes/tests/row.spec.ts
+++ b/packages/server/src/api/routes/tests/row.spec.ts
@@ -2195,95 +2195,94 @@ if (descriptions.length) {
         })
       })
 
-      isInternal &&
-        describe("attachments and signatures", () => {
-          const coreAttachmentEnrichment = async (
-            schema: TableSchema,
-            field: string,
-            attachmentCfg: string | string[]
-          ) => {
-            const testTable = await config.api.table.save(
-              defaultTable({
-                schema,
-              })
-            )
-            const attachmentToStoreKey = (attachmentId: string) => {
-              return {
-                key: `${config.getAppId()}/attachments/${attachmentId}`,
-              }
-            }
-            const draftRow = {
-              name: "test",
-              description: "test",
-              [field]:
-                typeof attachmentCfg === "string"
-                  ? attachmentToStoreKey(attachmentCfg)
-                  : attachmentCfg.map(attachmentToStoreKey),
-              tableId: testTable._id,
-            }
-            const row = await config.api.row.save(testTable._id!, draftRow)
-
-            await withEnv({ SELF_HOSTED: "true" }, async () => {
-              return context.doInAppContext(config.getAppId(), async () => {
-                const enriched: Row[] = await outputProcessing(testTable, [row])
-                const [targetRow] = enriched
-                const attachmentEntries = Array.isArray(targetRow[field])
-                  ? targetRow[field]
-                  : [targetRow[field]]
-
-                for (const entry of attachmentEntries) {
-                  const attachmentId = entry.key.split("/").pop()
-                  expect(entry.url.split("?")[0]).toBe(
-                    `/files/signed/prod-budi-app-assets/${config.getProdAppId()}/attachments/${attachmentId}`
-                  )
-                }
-              })
+      describe("attachments and signatures", () => {
+        const coreAttachmentEnrichment = async (
+          schema: TableSchema,
+          field: string,
+          attachmentCfg: string | string[]
+        ) => {
+          const testTable = await config.api.table.save(
+            defaultTable({
+              schema,
             })
+          )
+          const attachmentToStoreKey = (attachmentId: string) => {
+            return {
+              key: `${config.getAppId()}/attachments/${attachmentId}`,
+            }
           }
+          const draftRow = {
+            name: "test",
+            description: "test",
+            [field]:
+              typeof attachmentCfg === "string"
+                ? attachmentToStoreKey(attachmentCfg)
+                : attachmentCfg.map(attachmentToStoreKey),
+            tableId: testTable._id,
+          }
+          const row = await config.api.row.save(testTable._id!, draftRow)
 
-          it("should allow enriching single attachment rows", async () => {
-            await coreAttachmentEnrichment(
-              {
-                attachment: {
-                  type: FieldType.ATTACHMENT_SINGLE,
-                  name: "attachment",
-                  constraints: { presence: false },
-                },
-              },
-              "attachment",
-              `${uuid.v4()}.csv`
-            )
-          })
+          await withEnv({ SELF_HOSTED: "true" }, async () => {
+            return context.doInAppContext(config.getAppId(), async () => {
+              const enriched: Row[] = await outputProcessing(testTable, [row])
+              const [targetRow] = enriched
+              const attachmentEntries = Array.isArray(targetRow[field])
+                ? targetRow[field]
+                : [targetRow[field]]
 
-          it("should allow enriching attachment list rows", async () => {
-            await coreAttachmentEnrichment(
-              {
-                attachments: {
-                  type: FieldType.ATTACHMENTS,
-                  name: "attachments",
-                  constraints: { type: "array", presence: false },
-                },
-              },
-              "attachments",
-              [`${uuid.v4()}.csv`]
-            )
+              for (const entry of attachmentEntries) {
+                const attachmentId = entry.key.split("/").pop()
+                expect(entry.url.split("?")[0]).toBe(
+                  `/files/signed/prod-budi-app-assets/${config.getProdAppId()}/attachments/${attachmentId}`
+                )
+              }
+            })
           })
+        }
 
-          it("should allow enriching signature rows", async () => {
-            await coreAttachmentEnrichment(
-              {
-                signature: {
-                  type: FieldType.SIGNATURE_SINGLE,
-                  name: "signature",
-                  constraints: { presence: false },
-                },
+        it("should allow enriching single attachment rows", async () => {
+          await coreAttachmentEnrichment(
+            {
+              attachment: {
+                type: FieldType.ATTACHMENT_SINGLE,
+                name: "attachment",
+                constraints: { presence: false },
               },
-              "signature",
-              `${uuid.v4()}.png`
-            )
-          })
+            },
+            "attachment",
+            `${uuid.v4()}.csv`
+          )
         })
 
+        it("should allow enriching attachment list rows", async () => {
+          await coreAttachmentEnrichment(
+            {
+              attachments: {
+                type: FieldType.ATTACHMENTS,
+                name: "attachments",
+                constraints: { type: "array", presence: false },
+              },
+            },
+            "attachments",
+            [`${uuid.v4()}.csv`]
+          )
+        })
+
+        it("should allow enriching signature rows", async () => {
+          await coreAttachmentEnrichment(
+            {
+              signature: {
+                type: FieldType.SIGNATURE_SINGLE,
+                name: "signature",
+                constraints: { presence: false },
+              },
+            },
+            "signature",
+            `${uuid.v4()}.png`
+          )
+        })
+      })
+
       describe("exportRows", () => {
         beforeEach(async () => {
           table = await config.api.table.save(defaultTable())
diff --git a/packages/server/src/sdk/app/oauth2/crud.ts b/packages/server/src/sdk/app/oauth2/crud.ts
index 5f6bb01f1c..dd1a0fa1c7 100644
--- a/packages/server/src/sdk/app/oauth2/crud.ts
+++ b/packages/server/src/sdk/app/oauth2/crud.ts
@@ -66,7 +66,10 @@ export async function update(config: OAuth2Config): Promise<OAuth2Config> {
       c => c.name === config.name && c.id !== config.id
     )
   ) {
-    throw new HTTPError("Name is not available.", 400)
+    throw new HTTPError(
+      `OAuth2 config with name '${config.name}' is already taken.`,
+      400
+    )
   }
 
   doc.configs[config.id] = {
diff --git a/packages/types/src/documents/app/table/schema.ts b/packages/types/src/documents/app/table/schema.ts
index 551b1f16a8..86e15e4974 100644
--- a/packages/types/src/documents/app/table/schema.ts
+++ b/packages/types/src/documents/app/table/schema.ts
@@ -156,8 +156,8 @@ export interface FieldConstraints {
     message?: string
   }
   numericality?: {
-    greaterThanOrEqualTo: string | null
-    lessThanOrEqualTo: string | null
+    greaterThanOrEqualTo?: string | null
+    lessThanOrEqualTo?: string | null
   }
   presence?:
     | boolean
@@ -165,8 +165,8 @@ export interface FieldConstraints {
         allowEmpty?: boolean
       }
   datetime?: {
-    latest: string
-    earliest: string
+    latest?: string
+    earliest?: string
   }
 }
 
@@ -197,7 +197,7 @@ export interface BigIntFieldMetadata extends BaseFieldSchema {
   default?: string
 }
 
-interface BaseFieldSchema extends UIFieldMetadata {
+export interface BaseFieldSchema extends UIFieldMetadata {
   type: FieldType
   name: string
   sortable?: boolean
diff --git a/packages/types/src/ui/fields.ts b/packages/types/src/ui/fields.ts
new file mode 100644
index 0000000000..54faf16252
--- /dev/null
+++ b/packages/types/src/ui/fields.ts
@@ -0,0 +1,43 @@
+import {
+  FieldType,
+  FieldConstraints,
+  type FieldSchema,
+  type FormulaResponseType,
+} from "../"
+
+export interface UIField {
+  name: string
+  type: FieldType
+  subtype?: string
+  icon: string
+  constraints?: {
+    type?: string
+    presence?: boolean
+    length?: any
+    inclusion?: string[]
+    numericality?: {
+      greaterThanOrEqualTo?: string
+      lessThanOrEqualTo?: string
+    }
+    datetime?: {
+      latest?: string
+      earliest?: string
+    }
+  }
+}
+
+// an empty/partial field schema which is used when building new columns in the UI
+// the current construction process of a column means that it is never certain what
+// this object contains, or what type it is currently set to, meaning that our
+// strict FieldSchema isn't really usable here, the strict fieldSchema only occurs
+// when the table is saved, but in the UI in can be in a real mix of states
+export type FieldSchemaConfig = FieldSchema & {
+  constraints: FieldConstraints
+  fieldName?: string
+  responseType?: FormulaResponseType
+  default?: any
+  fieldId?: string
+  optionColors?: string[]
+  schema?: any
+  json?: string
+}
diff --git a/packages/types/src/ui/index.ts b/packages/types/src/ui/index.ts
index 0b219f54fb..b40baa61f5 100644
--- a/packages/types/src/ui/index.ts
+++ b/packages/types/src/ui/index.ts
@@ -5,3 +5,4 @@ export * from "./dataFetch"
 export * from "./datasource"
 export * from "./common"
 export * from "./BudibaseApp"
+export * from "./fields"