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. |
| 5521 | Missing customer code. |
| 5519 | Invalid Account or not for payment. |
| 5517 | Account currency is different than customer currency. |
| 5503 | Invalid book. |
| 5501 | Missing Currency Exchange rate. |
| 5500 | Invalid Customer Code. |
| 5542 | Invalid Customer. |
| 5541 | Invalid book or not accept this transaction type. |
| 5540 | Invalid transaction type. |
| 5539 | Invalid account or not accept this transaction type. |
| 5538 | Date can not be in the future. |
| 5537 | Missing transaction type. |
| 5536 | Missing pay party name. |
| 5535 | Missing amount. |
| 5534 | Missing or Invalid date. |
| 5598 | Missing related party name. |
| 5599 | Missing related party type. |
| 5600 | Missing related party code. |
| 5601 | Missing address label. |
| 5602 | Missing address country code. |
| 5603 | Missing address city. |
| 5604 | Missing contact type. |
| 5605 | Missing contact label. |
| 5606 | Missing contact value. |
| 5597 | Invalid type value. Allowed values are individual or organization. |
| 5607 | Invalid contact type. |
| 5608 | Invalid country code. |
| 5609 | Invalid currency. |
| 5610 | Invalid RelatedParty. |
| 5611 | Missing price list code, it must be specified. |
| 5612 | Non matching city and country. |