How To Fix ED191 - You cannot use lines beginning with '*{' or '*}' in modification mode

SAP Error Message - Details

• Message type: E = Error

• Message class: ED - ABAP/4 Editor messages

• Message number: 191

• Message text: You cannot use lines beginning with '*{' or '*}' in modification mode

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 ED191 - You cannot use lines beginning with '*{' or '*}' in modification mode ?

  The SAP error message ED191, which states "You cannot use lines beginning with '{' or '}' in modification mode," typically occurs in the context of the SAP ABAP Editor or when working with certain types of code or scripts that involve modifications to existing code.
  Cause:
  This error arises when you attempt to modify a piece of code that contains lines starting with *{ or *}. These lines are often used in SAP to denote comments or special markers in the code, and the ABAP Editor does not allow modifications to these lines in modification mode. This restriction is in place to prevent accidental changes to important comment markers or code structure.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Switch to Display Mode: If you are in modification mode, switch to display mode to view the code without making changes. This will allow you to see the lines without triggering the error.
  
  
  Remove or Comment Out the Lines: If you need to modify the code, consider removing or commenting out the lines that start with *{ or *}. However, be cautious with this approach, as these lines may serve a specific purpose in the code.
  
  
  Check for Syntax Errors: Ensure that there are no syntax errors in the code that might be causing the editor to misinterpret the lines.
  
  
  Use Proper Code Structure: If you are writing new code, ensure that you are following the proper structure and syntax rules of ABAP. Avoid using *{ or *} unless you are certain of their purpose.
  
  
  Consult Documentation: If you are unsure about the purpose of these lines or how to handle them, consult the SAP documentation or seek assistance from a colleague or SAP expert.
  
  
  Related Information:
  
  ABAP Editor: The ABAP Editor is a tool within SAP for writing and modifying ABAP code. Understanding its features and limitations can help prevent such errors.
  Commenting in ABAP: In ABAP, comments can be made using * for single-line comments or " for inline comments. Understanding how to properly comment your code can help avoid issues.
  SAP Notes and Community: If you encounter persistent issues, consider checking SAP Notes or the SAP Community for similar cases and solutions.
  
  By following these steps, you should be able to resolve the ED191 error and continue working with your ABAP code effectively.