post https://sandbox-api.gpsrv.com/intserv/4.0/setUserDefinedAccountField
Use the Set User-Defined Account Field endpoint to create or update custom data elements on an account. There is no technical limit on the number of fields that you can add. These fields are visible in the CST.
fieldId— Provide an identifier for the field. This identifier needs to be unique only to the account.fieldValue— Provide the value for that field.
These fields are visible in the CST in the Account tab.
See Global Response Statuses for status codes that are common across endpoints.
The table below lists status codes that apply to this specific endpoint.
| Status Code | Code Description |
|---|---|
| 518-01 | user defined field already exists; field updated |