Return codes from domain name API summary
Return Codes
| Return code | Description |
| 200 | Command completed successfully |
| 500 | Invalid domain name |
| 501 | Command syntax error |
| 502 | Authorization failed |
| 503 | Authorization failed |
| 504 | Invalid contact |
| 510 | Object does not exist |
| 512 | Parent object does not exist |
| 520 | Missing required field |
| 525 | Object already registered |
| 526 | Object not registered |
| 527 | Object already registered |
| 528 | Domain link with nameserver |
| 529 | Object already registered |
| 530 | Invalid attribute value |
| 535 | Restricted IP address |
| 540 | Parameter value syntax error |
| 550 | Parameter value policy error |
| 555 | Maximum registration period exceeded |
| 558 | No AuthCode for this extension |
| 559 | No anonymous whois for this extension |
| 560 | Transaction id not found |
| 570 | Object status does not allow for operation |
| 571 | Invalid authorization information |
| 572 | Operation not allowed for this TLD |
| 580 | Registry unreachable |
| 581 | Command failed |
| 582 | Server unreachable |
| 583 | Proxy server timeout |
| 584 | Database error |
| 585 | Invalid auhtInfo for this domain |
| 600 | Command failed due to server error. Client should try again |
| 601 | Command failed due to configuration error. Please contact namebay |
| 602 | Insufficient funds |
| 603 | Status not allowed |
| 604 | The modification is not allowed because of the current status |
| 605 | Domain already in the requested status |
| 606 | Missing required epp authinfo |
| 607 | Domain already in the requested operation |