Here are listed powerful hacks which can be used to change even the standard tables and even in a production environment (if you have CHANGE access in Debugger). You should think twice before using them.
You can track changes made in SE16N by &SAP_EDIT (GD-SAPEDIT) option in SE16N_CD_KEY table.
With a right authorization concept in place you would not be allowed to debug in production. So end users should be restricted with debugging authorizations.
1. Go to SE16N, type the table name, turn on the debugger (type /H in the command field), press F8. In the debugger set the values of GD-EDIT and GD-SAPEDIT to ‚X‘ and press F8.
2. Execute the function module SE16N_INTERFACE. Set parameters i_tab to table name and i_edit to ‚X‘ and press F8.
3. Carry out the transaction UASE16N (obsolete, but sometimes still in use). Type &SAP_EDIT in the command field.
SE16N: Abschalten von &SAP_EDIT – SAP Note 1420281