Using the SAPscript Form Debugger
Errors in the print program or the form that occur when printing in dialog mode (not when printing in background mode or in the update task) can often be identified quite easily by using the SAPscript form debugger.
A dialog box containing the default breakpoints appears.
To switch off the debugger, choose Debugger -> Exit in the debugger window.
For more information on the debugger, see Note 19104.