This is a list of modulus response codes and their meaning in case of an unsuccessful request.
| Code | Description |
|---|---|
| 5531 | Missing Account code. |
| 5530 | Missing cash book. |
| 5529 | Missing code, unit or quantity in item row with index $index. |
| 5528 | Document must has one or more item row. |
| 5527 | Missing payment term. |
| 5526 | Missing status. |
| 5525 | Missing invoice book. |
| 5524 | Missing or invalid due date. |
| 5523 | Missing or invalid issue date. |
| 5522 | Missing branch code. |
| 5521 | Missing customer code. |
| 5519 | Invalid Account or not for payment. |
| 5518 | Return date can not be in the future. |
| 5517 | Account currency is different than customer currency. |
| 5516 | Invalid Account or not for collection. |
| 5515 | Collection date can not be in the future. |
| 5513 | Issue date can not be after due date. |
| 5512 | Invalid payment term. |
| 5511 | Could not add item to price list at row with index $index. |
| 5510 | Invalid item and unit combination at row with index $index. |
| 5509 | Invalid Unit at row with index $index. |
| 5508 | Invalid Item code at row with index $index. |
| 5507 | Some rows are invalid. |
| 5506 | Issue date can not be after due date. |
| 5505 | Invalid status. |
| 5504 | Invalid salesperson may be in correct id, or not linked to the branch. |
| 5503 | Invalid book. |
| 5502 | Invalid or disabled Branch. |
| 5501 | Missing Currency Exchange rate. |
| 5500 | Invalid Customer. |
| 5597 | Invalid type value. Allowed values are individual or organization. |
| 5607 | Invalid contact type. |
| 5608 | Invalid country code. |
| 5609 | Invalid currency. |
| 5611 | Missing price list code ,it must be specified |
| 5612 | Non matching city and country |
| 5675 | Missing customer name. |
| 5676 | Missing customer type. |
| 5677 | Missing customer code. |
| 5602 | Missing address country code. |
| 5603 | Missing address city. |
| 5604 | Missing contact type. |
| 5605 | Missing contact label. |
| 5606 | Missing contact value. |