How To Fix 3A904 - Invalid bank key

SAP Error Message - Details

• Message type: E = Error

• Message class: 3A - Messages HR CZ

• Message number: 904

• Message text: Invalid bank key

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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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message 3A904 - Invalid bank key ?

  The SAP error message 3A904 - Invalid bank key typically occurs when there is an issue with the bank key entered in the system. This error can arise in various contexts, such as during the processing of payments, vendor master data maintenance, or when configuring bank details.
  Causes:
  
  Incorrect Bank Key: The bank key entered does not match any valid bank key in the system.
  Missing Bank Key: The bank key field may be left blank or not properly filled out.
  Bank Key Not Defined: The bank key may not be defined in the system or may have been deleted.
  Country-Specific Issues: The bank key format may vary by country, and an incorrect format may lead to this error.
  Data Inconsistency: There may be inconsistencies in the master data related to banks.
  
  Solutions:
  
  Verify Bank Key: Check the bank key entered for any typographical errors. Ensure that it is the correct key for the intended bank.
  Check Bank Master Data: Go to the bank master data (transaction code FI01 for creating a bank, FI02 for changing, and FI03 for displaying) and verify that the bank key exists and is active.
  Country-Specific Format: Ensure that the bank key adheres to the required format for the specific country. Different countries may have different requirements for bank key lengths and formats.
  Update Vendor/Customer Master Data: If the error occurs while processing vendor or customer payments, ensure that the bank details in the vendor or customer master data are correctly maintained.
  Consult Documentation: Refer to SAP documentation or help files for specific guidelines on bank key formats and requirements for your country.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FI01, FI02, FI03, F110 (for payment processing), and OB52 (for financial year settings).
  Bank Master Data: Understanding how to maintain and configure bank master data is crucial for resolving this error.
  SAP Notes: Check SAP Notes for any known issues or patches related to bank key validation errors.
  
  By following these steps, you should be able to identify and resolve the cause of the 3A904 - Invalid bank key error in SAP.