Batch create program members

Schedules asynchronous batch creation of program members. The request body is a JSON array of member entries (maximum body size is 10 MB). The request is processed asynchronously in batches of 100 entries.

The program must exist (otherwise, it returns a 404 error) and be in ACTIVE status (otherwise, it returns a 423 error). Supported member fields are validated during background processing using the same domain validation rules as single member creation. Entries that fail validation (missing/invalid customer_id, unknown customer, invalid status, duplicate customer_id within the same batch, member already exists) are reported per-entry individually in the report linked from the async action result. The failed entries do not fail the whole batch (conflicting members are skipped).

Returns 202 status with the identifier of the scheduled async action. Use the GET Async Action endpoint to check the status of the batch creation. You can also check the processing status and the result in the Audit log – Background tasks in the Voucherify dashboard.