GMS API method call returns HTTP code 200 OK on success or HTTP code 4xx/5xx on error:
| HTTP Code | Meaning |
|---|---|
| 200 | OK – Request was successfully processed |
| 400 | Bad Request – Your request is invalid. Please check request format and parameters. |
| 401 | Unauthorized – Your API key is wrong |
| 403 | Forbidden – Not enough rights to process the request due to GMS API firewall. |
| 404 | Not Found – The specified endpoint not found |
| 50x | Internal Server Error – We had a problem with our server (might be 500, 502, 503 etc). Please try again later. |
HTTP error code gives generic information about error reason, but usually a JSON object is returned also with more details and API error code. Read more in API Errors section.