Following HTTP Status Codes applicable to message response from payment gateway.
| Status Code | Description |
|---|---|
| 200 | OK - Successful response for HTTP requests. |
| 400 | Bad Request – PG server rejects request from merchant due to : syntax error or insufficient request information (missing parameters) transaction amount less than minimum amount Invalid API version |
| 401 | Unauthorized – merchant request does not pass the PG authentication. Example scenarios such as an unregistered merchant server’s IP address trying to make a request to the PG server. Invalid application code. Duplicate referenceID. |
| 404 | Not found – Application code or transaction not found |
| 500 | Internal Server Error – Error occurred due to PG internal processing. |
| 502 | Bad Gateway – Error occurred on channel. Merchant required to inquiry to check/reversal. |
| 504 | Gateway timeout – timeout between PG server and channel. Merchant required inquiry to check/reversal. |