We are using Travel Management ERP6.0. SAP provides a screen 9999 (User Data screen) within the dialog program SAPMP56T for customers to store or display custom fields, but this is still considered a modification. We did utilize heavily on this User Data screen (i.e. screen 9999) and include significant amount of custom processing logic (PBO, PAI) and UI onto the screen.
What is the extent to readjust the screen (including logic, UI etc) upon subsequent upgrade or patch update ? Do I have to re-do these changes every time since it may be over-written ? Anyone with similar experience ? Thank you.