Upsert Card Accounts in Bulk (Beta)

This endpoint provides significant performance advantages, over POSTing and PATCHing single Card Accounts, when creating or updating large numbers of Card Accounts. The behavior of this endpoint is similar to that of those endpoints except for some minor differences in how errors are handled.

Card Accounts that are not found, as resolved by their external_id and card_program_external_id (and publisher_external_id when applicable), are created. Existing objects are updated as though they were PATCHed.

You should check the result_type of the response to handle errors for individual items. If the top-level request returns a Client Error response (response codes 400-499), no Card Accounts from the batch were created or updated.

This endpoint is currently rate limited at 50 requests per minute.