# InvoiceCustomFieldDefinitionDto

A model the API reference uses in a request or a response. The operation pages link every field typed as this model here.

Read DTO for a custom field definition.

## Fields
- `id` (string(uuid))
- `creationTime` (string(date-time)): The date and time when this entity was created.
- `creatorId` (string(uuid)): The ID of the user who created this entity. (nullable)
- `lastModificationTime` (string(date-time)): The date and time when this entity was last modified. (nullable)
- `lastModifierId` (string(uuid)): The ID of the user who last modified this entity. (nullable)
- `billerId` (string(uuid))
- `billerType` ([InvoicePartyType](https://devportal.demo.winkpg.io/docs/api/models/InvoicePartyType.md)): Identifies the type of entity acting as the biller or recipient on an invoice.
  Values:
  - `GatewayOwner`: Platform-level gateway owner.
  - `Reseller`: Reseller entity.
  - `Merchant`: Merchant entity.
  - `Customer`: End customer.
- `key` (string): (nullable)
- `label` (string): (nullable)
- `description` (string): (nullable)
- `fieldType` ([CustomFieldType](https://devportal.demo.winkpg.io/docs/api/models/CustomFieldType.md)): The data type of a custom field definition.
  Values:
  - `Text`
  - `Dropdown`
  - `Checkbox`
  - `Date`
  - `Numeric`
- `isRequired` (boolean): (nullable)
- `isActive` (boolean): (nullable)
- `sortOrder` (integer(int32)): (nullable)
- `options` (array<string>): (nullable)
- `maxLength` (integer(int32)): (nullable)
- `regexPattern` (string): (nullable)
- `regexErrorMessage` (string): (nullable)
- `concurrencyStamp` (string): (nullable)

## See also

- [All documentation](https://devportal.demo.winkpg.io/llms.txt): the machine-readable index of every public page on this site.