How To Fix AR121 - Bank account number contains invalid characters

AR121 - Overview

• Message type: E = Error

• Message class: AR - SSRV function module messages

• Message number: 121

• Message text: Bank account number contains invalid characters

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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AR121 - Details

• The SAP error message AR121, which states "Bank account number contains invalid characters," typically occurs when the bank account number entered in the system contains characters that are not allowed. This can happen in various SAP transactions where bank account information is required, such as vendor or customer master data maintenance.
  
  Cause:
  
  Invalid Characters: The bank account number may contain special characters, letters, or spaces that are not permitted. For example, it should only consist of digits (0-9) or specific allowed characters depending on the country and bank requirements.
  Incorrect Format: The format of the bank account number may not conform to the expected format defined in the system settings or country-specific requirements.
  Data Entry Errors: Mistakes during manual entry, such as typos or accidental inclusion of non-numeric characters.
  
  
  Solution:
  
  Check the Input: Review the bank account number for any invalid characters. Ensure that it only contains the appropriate digits and any allowed special characters (like