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

BL100 - Overview

• 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.

BL100 - Details

• 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