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

SAP Error Message - Details

• 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 not part of the command.
  
  
  
  Re-enter the Command: Instead of copying and pasting, try typing the command manually to avoid any hidden characters.
  
  
  Refer to Documentation: Check the SAP documentation or help files for the specific transaction or report you are using to understand the valid line commands.
  
  
  Use Help Functionality: In many SAP screens, you can use the F1 key to get help on the field or command you are working with, which may provide additional guidance on valid inputs.
  
  
  Contact Support: If you are still unable to resolve the issue, consider reaching out to your SAP support team or consulting with a colleague who has experience with the specific transaction.
  
  
  Related Information:
  
  Transaction Codes: The error may occur in various transactions, such as those related to data entry, report generation, or configuration.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific transaction you are using.
  User Permissions: Ensure that you have the necessary permissions to execute the command you are trying to use, as some commands may be restricted based on user roles.
  
  By following these steps, you should be able to identify and correct the issue causing the ED501 error message in SAP.