BL100 - Message could not be formatted (too complex).

SAP Error Message - Details

• Message type: E = Error

• Message class: BL - Application Log

• Message number: 100

• Message text: Message could not be formatted (too complex).

What causes this issue?

The message is too complex. The function cannot be ended successfully
when the message contains the following character strings at the same
time: '&&','@@','##','$$'.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BL100 - Message could not be formatted (too complex). ?

  The SAP error message BL100 ("Message could not be formatted (too complex)") typically occurs when the system encounters an issue while trying to format a message for display. This can happen in various contexts, such as during the execution of a program, report, or transaction where the system is attempting to generate a message for the user.
  Causes:
  
  Complex Message Structure: The message being generated may have too many variables or conditions, making it too complex for the system to format properly.
  Exceeding Limits: There may be limits on the number of characters or the complexity of the message that can be processed, and the message exceeds these limits.
  Incorrect Message Handling: There could be issues in the code where the message is being generated, such as incorrect parameters or missing data.
  Custom Code Issues: If there are custom developments or enhancements, they might not be handling messages correctly.
  
  Solutions:
  
  Simplify the Message: Review the message text and its parameters. Try to simplify the message by reducing the number of variables or conditions.
  Check Message Class: Ensure that the message class and number are correctly defined in the system. You can check this in transaction SE91.
  Debugging: If you have access to the ABAP code, use the debugger to trace where the message is being generated. Look for any anomalies in the parameters being passed.
  Review Custom Code: If the error is occurring in a custom program, review the code for any issues related to message formatting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates that resolve the issue.
  Consult Documentation: Review the documentation for the specific transaction or program to ensure that you are using it correctly.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE91 (Message Class) and SE80 (Object Navigator) to investigate message definitions and related code.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  SAP Support: If the issue persists and is critical, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the BL100 error and implement a solution to resolve it.