| Code | Short Message | Long Message |
| 25001 | Transaction refused | Redemption unsuccessful |
| 25100 | Transaction refused | Invalid incoming XML |
| 25200 | Transaction refused | Non numeric Voucher Value |
| 25201 | Transaction refused | Base Currency not 3 characters in length |
| 25202 | Transaction refused | Non numeric Ticket Value |
| 25203 | Transaction refused | Invalid BrandId |
| 25204 | Transaction refused | Invalid MerchDateTime |
| 25205 | Transaction refused | Invalid transactionId: greater than 20 characters |
| 25206 | Transaction refused | Invalid Redemption Type |
| 25207 | Transaction refused | Negative Ticket Value not allowed |
| 25208 | Transaction refused | No decimal place given in Ticket Value |
| 25209 | Transaction refused | No decimal place given in Voucher Value |
| 25210 | Transaction refused | Negative Voucher Value not allowed |
| 25211 | Transaction refused | Invalid or unsupported voucher product code |
| 25212 | Transaction refused | AmountReference with TicketValue not allowed |
| 25213 | Transaction refused | No ukashNumber supplied |
| 25214 | Transaction refused | No transactionId supplied |
| 25215 | Transaction refused | No brandId supplied |
| 25216 | Transaction refused | Ticket Value cannot be greater than Voucher Value without Currency Conversion |
| 25217 | Transaction refused | Base Currency and Voucher currency do not match. |
| 25218 | Transaction refused | Brand not configured to Issue Vouchers |
| 25219 | Transaction refused | Invalid Voucher Number |
| 25221 | Transaction refused | Multiple Transactions found |
| 25222 | Transaction refused | Unknown transaction status |
| 25223 | Transaction refused | No transaction found. |
| 25300 | Transaction refused | Invalid Login and/or Password |
| 25301 | Transaction refused | Invalid Login and/or BrandID |
| 25400 | Transaction refused | Required Currency Conversion not supported |
| 25500 | Transaction refused | Error In Currency Conversion |
| 25501 | Transaction refused | Converted Settle Amount greater than Voucher Value |
| 25800 | Transaction refused | Max duration between getSettleAmount and Redemption exceeded. |
| 25801 | Transaction refused | Invalid amountReference Submitted |
| 25900 | Transaction refused | Technical Error. Please contact Ukash Merchant Support. |