| 110117 | Failure/Lack of communication with Humo system |
| 110118 | Unspecified Humo system error |
| 110119 | Failure/Lack of connection with the Uzcard system |
| 110120 | Failure in the Uzcard system |
| 210101 | Transaction not found |
| 210102 | Business process does not exist |
| 210103 | Processing center not found |
| 210104 | Unspecified error in a business process |
| 210110 | Uzcard terminal does not exist |
| 210111 | Humo terminal does not exist |
| 210113 | Temporarily disabled due to maintenance at the Humo processing center |
| 210114 | Temporarily disabled due to maintenance at the Uzcard processing center |
| 210122 | A unique partner ID already exists in the system |
| 210128 | Temporarily disabled due to maintenance at the Uzcard processing center |
| 210129 | Temporarily disabled due to maintenance at the Humo processing center |
| 210130 | Transferring money to a corporate card is prohibited |
| 210133 | A unique transaction ID already exists in the system |
| 210135 | No connection to billing service |
| 210136 | No connection to the card service |
| 900001 | Invalid request |
| 900002 | Prohibited |
| 900003 | Method not allowed |
| 900004 | Internal Server Error |
| 900005 | The query parameter is required |
| 900006 | User is not found |
| 900007 | Client not found |
| 900008 | Partner not found |