Codes
Success Codes
| HTTP Response Code | Description | Full Description of HTTP Code |
| 200 | OK (response success) | The request has succeeded. |
| 201 | Created | The request has succeeded and created a new resource on the server. |
| 204 | No Content (response empty) | The request has succeeded but there was no new information to return. |
Error Codes
| Zoho Projects Error Code | HTTP Response Code | Description | Full Description of HTTP Code |
| 6401, 6891, 6403, 6831, 6832, 6500 | 400 | Bad Request | The request sent by the client was syntactically incorrect. |
| 6401, 6890 | 401 | Unauthorized Access | The request requires HTTP authentication. |
| 6504, 6404 | 404 | Not Found | The requested resource is not available. |
| 6500, 6891 | 500 | Internal Error | The server encountered an error which prevented it from fulfilling the request. |