post https://example.com/swagger/programs//accounts//users//identity
Structure of API Call: POST /accounts/{accountIdentifier}/users/{userIdentifier}/identity
This endpoint allows an Individual Taxpayer Identification Number (ITIN) to be added to a customer’s account that originally enrolled using a Mexican Matricula ID only. This is primarily for U.S. tax purposes.
ITIN Limits:
- Up to 1 active account with the same ITIN per consumer program is allowed
- Up to 3 lifetime accounts with the same ITIN per consumer program are allowed