1N255 - External accnt no. &1 and internal accnt no. &2 are incompatible

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 255

• Message text: External accnt no. &1 and internal accnt no. &2 are incompatible

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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AnswerBot

• What is the cause and solution for SAP error message 1N255 - External accnt no. &1 and internal accnt no. &2 are incompatible ?

  The SAP error message 1N255 indicates that there is an incompatibility between an external account number and an internal account number in the context of financial transactions. This error typically arises in scenarios involving account assignments, such as when trying to post a transaction that involves both external and internal accounts.
  Cause:
  The incompatibility can occur due to several reasons:
  
  Account Type Mismatch: The external account number (e.g., a vendor or customer account) and the internal account number (e.g., a general ledger account) may not be compatible due to their types. For example, you might be trying to use a customer account where a vendor account is expected.
  Configuration Issues: The configuration settings in the SAP system may not allow the combination of the specified external and internal accounts. This could be due to settings in the account determination or in the financial accounting configuration.
  Missing Master Data: The master data for either the external or internal account may not be set up correctly, leading to incompatibility.
  Posting Rules: The posting rules defined in the system may restrict the combination of these accounts.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Account Types: Verify that the external account number and internal account number are of compatible types. Ensure that you are using the correct account for the transaction you are trying to post.
  
  
  Review Configuration: Check the configuration settings in the SAP system related to account determination. Ensure that the settings allow for the combination of the specified accounts.
  
  
  Validate Master Data: Ensure that both the external and internal accounts are correctly set up in the system. Check for any missing or incorrect data in the master records.
  
  
  Consult Documentation: Review the SAP documentation or help files related to account postings to understand the rules and restrictions that may apply to your specific scenario.
  
  
  Test with Different Accounts: If possible, try using different external and internal accounts to see if the error persists. This can help identify if the issue is specific to certain accounts.
  
  
  Contact Support: If the issue cannot be resolved through the above steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  Related Information:
  
  Transaction Codes: You may want to check transaction codes like FS00 (G/L Account Master Data), FK01 (Vendor Master Data), or FD01 (Customer Master Data) to review the account details.
  SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  User Forums: Consider checking SAP community forums or user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.