| Name | Description | Type | Additional information |
|---|---|---|---|
| ContactID |
Contact ID |
integer |
None. |
| Created |
Timestamp of extra field creation |
date |
None. |
| ID |
Contact extra field ID |
integer |
Required |
| Key |
Contact extra field key/name |
string |
Required |
| Value |
Contact extra field value/contents |
string |
Required |