How To Fix F0406 - ACB: Invalid character "&"

SAP Error Message - Details

• Message type: E = Error

• Message class: F0 - FI batch program messages

• Message number: 406

• Message text: ACB: Invalid character "&"

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message F0406 - ACB: Invalid character "&" ?

  The SAP error message F0406 ACB: "Invalid character '&'" typically occurs when there is an issue with the input data in a financial document or transaction. This error indicates that the system has encountered an invalid character, specifically the ampersand (&), which is not allowed in certain fields or contexts within SAP.
  Cause:
  
  Invalid Input Data: The most common cause is that the input data contains an invalid character, such as the ampersand (&), which is not permitted in specific fields (e.g., text fields, account numbers, etc.).
  Data Transfer Issues: If data is being imported or transferred from another system, it may contain special characters that are not recognized by SAP.
  User Entry Error: Users may inadvertently enter invalid characters while inputting data manually.
  
  Solution:
  
  Check Input Data: Review the data being entered or imported to ensure that it does not contain the ampersand (&) or any other invalid characters. Remove or replace any invalid characters.
  Data Validation: Implement data validation checks before submitting data to SAP to catch invalid characters early in the process.
  Use Alternative Characters: If the ampersand is necessary for the context, consider using alternative representations or rephrasing the text to avoid using the invalid character.
  Review Configuration: If this error occurs frequently, review the configuration of the relevant SAP module to ensure that it is set up to handle the expected data formats correctly.
  Consult Documentation: Refer to SAP documentation or help resources for specific field requirements and restrictions regarding valid characters.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: If you are working with specific transaction codes (e.g., FB01 for posting documents), ensure that you are familiar with the field requirements and restrictions for those transactions.
  User Training: Provide training for users on the correct data entry practices to minimize the occurrence of such errors.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant for further assistance.