How To Fix 1N257 - External accnt no. &1 and IBAN &2 are incompatible; check your entries

SAP Error Message - Details

• Message type: E = Error

• Message class: 1N - BCA: Payment Item Dialog

• Message number: 257

• Message text: External accnt no. &1 and IBAN &2 are incompatible; check your entries

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 1N257 - External accnt no. &1 and IBAN &2 are incompatible; check your entries ?

  The SAP error message 1N257 indicates that there is an incompatibility between the external account number and the International Bank Account Number (IBAN) that you are trying to use in your transaction. This error typically arises in the context of financial transactions, particularly when dealing with bank details in SAP.
  Cause:
  
  Mismatch in Format: The external account number and the IBAN may not match in terms of format or length. Each country has specific rules regarding the structure of IBANs and account numbers.
  Incorrect Data Entry: There may be a typographical error in either the external account number or the IBAN.
  Configuration Issues: The system may not be configured correctly to recognize the relationship between the external account number and the IBAN.
  Bank-Specific Rules: Some banks have specific requirements for how account numbers and IBANs should be formatted or validated.
  
  Solution:
  
  Verify Entries: Double-check the external account number and IBAN for any typographical errors. Ensure that both numbers are entered correctly.
  Check Format: Ensure that the external account number and IBAN conform to the expected formats. You can refer to the relevant banking standards for the specific country.
  Consult Bank Details: If you are unsure about the correct IBAN or account number, consult with the bank to confirm the details.
  SAP Configuration: If the issue persists, check the configuration settings in SAP related to bank accounts and IBANs. Ensure that the system is set up to recognize the relationship between the external account number and the IBAN.
  Use Transaction Codes: You can use transaction codes like OBPM1 (for managing bank master data) to review and update bank details.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting the SAP Help Portal for further assistance.
  
  Related Information:
  
  IBAN Structure: The IBAN consists of a country code, check digits, and a basic bank account number (BBAN). Each country has its own specific length and structure for IBANs.
  SAP Documentation: Refer to SAP documentation for specific guidelines on handling bank account data and IBANs.
  Banking Regulations: Be aware of any banking regulations that may affect how account numbers and IBANs are used in your transactions.
  
  By following these steps, you should be able to identify and resolve the incompatibility issue indicated by the error message 1N257.