| Name | Type | Description | Notes |
|---|---|---|---|
| order_id | string | Order ID | |
| client_order_id | string | Client order ID (used by some gateway/Inner Pay paths, optional) | [optional] |
| payment_receipt_file_key | string | User payment receipt: required. Recommended: call `POST /otc/upload/pre_upload` (`scene=general`) to upload to the temporary bucket, then pass the returned base64 file_key unchanged (do not decode); the server moves to the production bucket and persists. Still compatible with legacy production-bucket base64 keys. Single file; jpg/jpeg/png/pdf; ≤10MB. | |
| payment_receipt | string | Alias compatible with `payment_receipt_file_key` (depends on the gateway's external field name) | [optional] |