How To Fix ED501 - Line command '&' contains invalid characters; correct these characters

ED501 - Overview

• Message type: E = Error

• Message class: ED - ABAP/4 Editor messages

• Message number: 501

• Message text: Line command '&' contains invalid characters; correct these characters

What causes this issue?

The line command contains invalid characters.

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?

With the line command RESET, you can delete the current and marked line
command.
To display the allowed line commands, place the cursor on the line
number and press the help key.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message ED501 - Line command '&' contains invalid characters; correct these characters ?

  The SAP error message ED501 indicates that there is an issue with the line command you are trying to execute in a transaction or report. Specifically, the message states that the line command contains invalid characters, which means that the command you entered does not conform to the expected format or contains characters that are not allowed.
  
  Cause:
  
  Invalid Characters: The line command may include special characters, spaces, or symbols that are not permitted.
  Incorrect Syntax: The command may not follow the correct syntax or format expected by the SAP system.
  Copy-Paste Issues: If the command was copied from another source, it may have included hidden characters or formatting that is not recognized by SAP.
  
  
  Solution:
  
  
  Check the Command: Review the line command you entered and ensure that it only contains valid characters. Common valid commands include:
  
  C for copy
  D for delete
  I for insert
  S for select
  X for execute
  Ensure there are no spaces or special characters that are