| Code | Short Message | Long Message |
| 30007 | Transaction refused | Failed to read the input XML |
| 30008 | Transaction refused | Ds_Merchant_MerchantCode absent |
| 30009 | Transaction refused | Ds_Merchant_MerchantCode format error |
| 30010 | Transaction refused | Ds_Merchant_Terminal absent |
| 30011 | Transaction refused | Ds_Merchant_Terminal format error` |
| 30014 | Transaction refused | Ds_Merchant_Order format |
| 30015 | Transaction refused | Ds_Merchant_Currency absent |
| 30016 | Transaction refused | Error in Ds_Merchant_Currency format |
| 30017 | Transaction refused | Peseta transaction not admitted |
| 30018 | Transaction refused | Ds_Merchant_Amount absent |
| 30019 | Transaction refused | Ds_Merchant_Amount format error |
| 30020 | Transaction refused | Ds_Merchant_MerchantSignature absent |
| 30021 | Transaction refused | Ds_Merchant_MerchantSignature empty |
| 30022 | Transaction refused | Ds_Merchant_TransactionType format error |
| 30023 | Transaction refused | Ds_Merchant_TransactionType unknown |
| 30024 | Transaction refused | Ds_Merchant_ConsumerLanguage has more than 3 positions |
| 30025 | Transaction refused | Ds_Merchant_ConsumerLanguage format error |
| 30026 | Transaction refused | No such merchant / terminal |
| 30027 | Transaction refused | Currency sent by merchant is different from that assigned to terminal |
| 30028 | Transaction refused | Merchant / terminal no longer registered |
| 30030 | Transaction refused | Card payment has arrived with operation type that is neither payment nor pre-autorisation |
| 30031 | Transaction refused | Payment method not defined |
| 30033 | Transaction refused | Error on mobile with the operation type |
| 30034 | Transaction refused | Database access error |
| 30037 | Transaction refused | Phone number not valid |
| 30038 | Transaction refused | Java error |
| 30040 | Transaction refused | No payment method assigned to merchant / terminal |
| 30041 | Transaction refused | Error during calcul of merchant data hash |
| 30042 | Transaction refused | Signature sent is not correct |
| 30046 | Transaction refused | Card bin not registered |
| 30051 | Transaction refused | Order number repeated |
| 30054 | Transaction refused | No transactions exists for making refund |
| 30055 | Transaction refused | More than one payment with same order number |
| 30056 | Transaction refused | Transaction to be refunded was never authorised |
| 30057 | Transaction refused | Refund amount larger than is allowed |
| 30058 | Transaction refused | Data inconsistency in validation of a confirmation |
| 30059 | Transaction refused | No transaction exists to be confirmed |
| 30060 | Transaction refused | Confirmation associated to pre-authorisation already exists |
| 30061 | Transaction refused | Pre-authorisation for which confirmation is requested not authorised |
| 30062 | Transaction refused | The amount to confirm larger than is allowed |
| 30063 | Transaction refused | Card number not available |
| 30064 | Transaction refused | Card number cannot have more than 19 positions |
| 30065 | Transaction refused | Card number not numerical |
| 30066 | Transaction refused | Expiry date not available |
| 30067 | Transaction refused | Expiry date not numerical |
| 30068 | Transaction refused | Expiry month not valid |
| 30069 | Transaction refused | Expiry year not available |
| 30070 | Transaction refused | Expiry year not numerical |
| 30071 | Transaction refused | Card expired |
| 30072 | Transaction refused | Transaction may no be cancelled |
| 30074 | Transaction refused | Ds_Merchant_Order absent |
| 30075 | Transaction refused | Ds_Merchant_Order has less than 4 or more than 12 positions |
| 30076 | Transaction refused | Non-numerical first four positions in Ds_Merchant_Order |
| 30077 | Transaction refused | Non-numerical first four positions in Ds_Merchant_Order. Do not use |
| 30078 | Transaction refused | Payment method not available |
| 30079 | Transaction refused | Failed to make payment by card |
| 30081 | Transaction refused | New session. Stored data lost |
| 30084 | Transaction refused | Value of Ds_Merchant_Conciliation is null |
| 30085 | Transaction refused | Value of Ds_Merchant_Conciliation is not numerical. |
| 30086 | Transaction refused | Value of Ds_Merchant_Conciliation does not occupy 6 positions |
| 30089 | Transaction refused | Value of Ds_Merchant_ExpiryDatedoes not occupy 4 positions |
| 30092 | Transaction refused | Value of Ds_Merchant_ExpiryDate is null |
| 30093 | Transaction refused | Card number invalid |
| 30094 | Transaction refused | Card not authenticated as 3D Secure |
| 30097 | Transaction refused | Ds_Merchant_CMerchant field value invalid |
| 30098 | Transaction refused | Ds_Merchant_CVentana field value invalid |