Represents a definition of a custom field. Depending on the custom field definition this definition can be for parties, opportunities or projects.
| Name | Type | Description | |
|---|---|---|---|
| id | Long | Read only | The id of this custom field definition. Note that field definitions assignable to different entities (parties, opportunities or projects) can have the same id. | 
| name | String | Required | The name of this custom field. | 
| description | String | A longer description of the purpose of this custom field. | |
| type | String | Required | The type of this custom field. Accepted values are:  | 
| tag | Nested Tag | Represents which datatag (if any) this custom field is part of. | |
| captureRule | String | Represents whether this custom field can be added to people, organisations or both. Is present only on party custom fields. Accepted values are:  | |
| options | Array of String | Represents the possible values of this custom field. Is present and required only if  | |
| important | Boolean | Indicates if this custom field is Important. Important fields are highlighted when adding or editing records, and a warning indicator is displayed on records where the field doesn't have a value. |