I need to debug the print program the first time the invoice is printed. We are having problems with one of the field the first time the sapscript is generated. This is done thru VF01 with output type ZJIN (customized). But when I try to reprint it using VF02 or VF03 the data is already correct. I really need to set the breakpoint when I create billing document in VF01 but the program is not stopping where i put the breakpoint. How will i going to debug the program? Please help.