How To Fix BIL121 - Internal program error occurred

SAP Error Message - Details

• Message type: E = Error

• Message class: BIL - General billing

• Message number: 121

• Message text: Internal program error occurred

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

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.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message BIL121 - Internal program error occurred ?

  The SAP error message BIL121, which states "Internal program error occurred," typically indicates that there is an unexpected issue within the SAP system that is not being handled correctly. This error can arise from various causes, including:
  Causes:
  
  Data Inconsistencies: There may be inconsistencies or corruption in the data being processed.
  Custom Code Issues: If there are custom developments or enhancements in the system, they might be causing conflicts or errors.
  System Bugs: There could be a bug in the SAP software version you are using.
  Configuration Issues: Incorrect configuration settings in the system can lead to unexpected behavior.
  Performance Issues: If the system is under heavy load, it might lead to timeouts or other internal errors.
  
  Solutions:
  
  Check SAP Notes: Look for relevant SAP Notes in the SAP Support Portal. SAP frequently releases notes that address known issues and bugs.
  Review Custom Code: If there are any custom developments, review the code for potential issues or conflicts.
  Data Consistency Check: Run data consistency checks to ensure that the data being processed is valid and complete.
  System Logs: Check the system logs (transaction SM21) for any additional error messages or warnings that could provide more context about the issue.
  Transaction Codes: If the error occurs during a specific transaction, try to replicate the issue in a test environment to gather more information.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including any relevant logs and steps to reproduce the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like ST22 (Dump Analysis) and SM37 (Job Monitoring) to analyze the error further.
  System Performance: Monitor system performance and resource usage to identify any potential bottlenecks.
  User Authorizations: Ensure that the user has the necessary authorizations to perform the actions that led to the error.
  
  By following these steps, you should be able to diagnose and potentially resolve the BIL121 error in your SAP system.