> ## Documentation Index > Fetch the complete documentation index at: https://docs.superoffice.com/llms.txt > Use this file to discover all available pages before exploring further. # Change Field Type > Change a DocumentEntity user-defined field's type based on the prog-id or label. ## OpenAPI ````yaml /openapi/rest/openapi-v3-Document.json post /api/v1/Document/UdefLayout/{progidOrLabel}/ChangeTo/{fieldType} openapi: 3.0.0 info: version: v1-REST title: SuperOffice REST API v1 description: SuperOffice REST API - Document contact: name: SuperOffice DevNet url: https://docs.superoffice.com/en/api/index.html email: sdk@superoffice.com servers: - url: http://localhost:56350 - url: https://localhost:56350 security: [] tags: [] externalDocs: description: >- The SuperOffice DevNet Community has more documentation, examples, and discussion forums. url: https://community.superoffice.com/en/developer/ paths: /api/v1/Document/UdefLayout/{progidOrLabel}/ChangeTo/{fieldType}: post: tags: - Document summary: Change Field Type description: >- Change a DocumentEntity user-defined field's type based on the prog-id or label. operationId: v1DocumentEntity_ChangeFieldType parameters: - name: progidOrLabel in: path description: The udef field id, case-sensitive prog-id, or field label. required: true schema: type: string - name: fieldType in: path description: The new type of the user defined field. required: true schema: type: string enum: - Number - ShortText - LongText - Date - UnlimitedDate - Checkbox - List - Decimal - name: isIndexed in: query description: >- Should we put data in an indexed column for faster access? Default no required: false schema: type: boolean - name: Accept-Language in: header description: >- Convert string references and multi-language values into a specified language (iso2) code. required: false schema: type: string - name: SO-Language in: header description: >- Convert string references and multi-language values into a specified language (iso2) code. Overrides Accept-Language value. required: false schema: type: string - name: SO-Culture in: header description: >- Number, date formatting in a specified culture (iso2 language) code. Partially overrides SO-Language/Accept-Language value. Ignored if no Language set. required: false schema: type: string - name: SO-TimeZone in: header description: >- Specify the timezone code that you would like date/time responses converted to. required: false schema: type: string - name: SO-AppToken in: header description: >- The application token that identifies the partner app. Used when calling Online WebAPI from a server. required: false schema: type: string responses: '200': description: DocumentEntity found. content: application/json: schema: $ref: >- #/components/schemas/SuperOffice.CRM.Services.UserDefinedFieldInfo text/json: schema: $ref: >- #/components/schemas/SuperOffice.CRM.Services.UserDefinedFieldInfo application/xml: schema: $ref: >- #/components/schemas/SuperOffice.CRM.Services.UserDefinedFieldInfo text/xml: schema: $ref: >- #/components/schemas/SuperOffice.CRM.Services.UserDefinedFieldInfo application/json-patch+json: schema: $ref: >- #/components/schemas/SuperOffice.CRM.Services.UserDefinedFieldInfo application/merge-patch+json: schema: $ref: >- #/components/schemas/SuperOffice.CRM.Services.UserDefinedFieldInfo '404': description: DocumentEntity not found. security: - SuperOffice_Password: [] SuperId_Authentication: [] components: schemas: SuperOffice.CRM.Services.UserDefinedFieldInfo: description: "Return information about the user defined fields. The information can be used to mirror the layout of the user-defined fields in the user interface.\r\n\r\nCarrier object for UserDefinedFieldInfo.\r\nServices for the UserDefinedFieldInfo Carrier is available from the UserDefinedFieldInfo Agent." type: object properties: UDefFieldId: format: int32 description: Primary key type: integer ColumnId: format: int32 description: The ID of the database column this field corresponds to type: integer FieldDefault: description: Optional default value for String fields type: string FieldHeight: format: int32 description: field height in pixels, 0 = 'enough' (from font) type: integer FieldLabel: description: The label (lead text) type: string FieldLeft: format: int32 description: X pixel coordinate of field type: integer FieldTop: format: int32 description: Y pixel coordinate of field type: integer FieldType: description: >- Field type: 0 = leadtext only, 1 = Edit, 2 = CheckBox, 3 = dropdown, 4 = listbox enum: - Number - ShortText - LongText - Date - UnlimitedDate - Checkbox - List - Decimal type: string FieldWidth: format: int32 description: field width in pixels, 0 = 'enough' (from font) type: integer FormatMask: description: >- Formatting mask, can be whatever the controls understand (currently nothing :-)) type: string HideLabel: description: Hide the label if 1 type: boolean IsIndexed: description: Is this field indexed? 0 if no, index no. if yes type: boolean LabelHeight: format: int32 description: label height in pixels, 0 = 'enough' (from font) type: integer LabelLeft: format: int32 description: X pixel coordinate of label type: integer LabelTop: format: int32 description: Y pixel coordinate of label type: integer LabelWidth: format: int32 description: label width in pixels, 0 = 'enough' (from font) type: integer LastVersionId: format: int32 description: >- UDefFieldId this field had in the previous version, 0 = field is new in this version type: integer ListTableId: format: int32 description: >- The table ID of the source table for lists: kTableAssoc, kTableContInt or whatever type: integer IsMandatory: description: 0 = no, 1 = yes (field must be filled out) type: boolean Type: description: >- ID of owning table (contact, person, project) - this is not the actual tableNumber, rather it's an enum enum: - Invalid - Contact - Person - Project - Sale - Temp - Appointment - Document - None type: string Page1LineNo: format: int32 description: >- Line no on View Page 1, used if MDO flags are OFF. 0 = this field is not visible on page 1 type: integer ProgId: description: >- Programmatic ID, for use by software that needs to find a particular field. Carried over like udefIdentity across generations. Use a Company.Product.Field format to avoid naming conflicts; the Company name SuperOffice is reserved. type: string IsReadOnly: description: 0 = read/write, 1 = readonly (don't combine with mandatory 8-) ) type: boolean ShortLabel: description: >- Short name to be used in Archive headings and on page 1. If blank, the fieldLabel will be used everywhere. type: string TabOrder: format: int32 description: Tab order value, sets the field processing sequence type: integer TextLength: format: int32 description: Length (in characters) of a text field, 0 for other types type: integer Tooltip: description: Optional tooltip text for this field type: string UdefIdentity: format: int32 description: Unique number used to track field identity across layout changes type: integer UDListDefinitionId: format: int32 description: List to use for populating dropdown or listbox type: integer Justification: description: Justification - 0 = default, left, right, center enum: - Default - Left - Center - Right type: string Version: format: int32 description: >- Definition version number; ALL fields get new version whenever layout is updated. type: integer TemplateVariableName: description: Template variable name type: string HasBeenPublished: description: Has the udef field been published? type: boolean MdoListName: description: >- MDO list name used to populate this list. Derived from UDListDefinitionId and ListTableId. (Read-only) type: string TableRight: $ref: '#/components/schemas/SuperOffice.CRM.Security.TableRight' FieldProperties: description: >- Field property dictionary mapping field names to field access rights. type: object additionalProperties: $ref: '#/components/schemas/SuperOffice.CRM.Security.FieldProperty' SuperOffice.CRM.Security.TableRight: description: "Wraps a table right together with an explanatory reason.\r\nCode can indicate why access is restricted." type: object properties: Mask: type: string Reason: type: string SuperOffice.CRM.Security.FieldProperty: description: >- Class holding properties like field length, field type about a field in the carrier. type: object properties: FieldRight: $ref: '#/components/schemas/SuperOffice.CRM.Security.FieldRight' FieldType: type: string FieldLength: format: int32 description: '' type: integer SuperOffice.CRM.Security.FieldRight: description: "Wraps the field right together with an explanatory reason.\r\nAlso adds logical operators to the field rights so that they can be easily combined." type: object properties: Mask: type: string Reason: type: string ```` ## Related topics - [Change Field Type](/en/api/reference/restful/rest/project/change-field-type.md)