To display line numbers in the SAP ABAP Editor, follow these steps based on the editor version you’re using:

1. SAP GUI ABAP Editor (SE38, SE80 - Classical Editor)

  1. Open SAP GUI and navigate to SE38 (ABAP Editor) or SE80 (Workbench).
  2. In the editor window, click on the “Customizing Local Layout” button (or press ALT + F12).
  3. Select Options.
  4. Go to ABAP Editor (or Editor (Classic) for older versions).
  5. Check the option “Show Line Numbers”.
  6. Click OK and restart the editor if needed.

2. Eclipse ADT (ABAP Development Tools)

If you are using ABAP Development Tools (ADT) in Eclipse:

  1. Open Eclipse.
  2. Navigate to Window > Preferences.
  3. Go to General > Editors > Text Editors.
  4. Check the option “Show line numbers”.
  5. Click Apply and Close.