hi

You can use SMARTFORM_TRACE tcode to debug smartforms.

hi,

u can also debug smartforms by :

1. apply 'BREAK-POINT' in driver program
2. apply the breakpoint in genrated funtion module
3. hard code the breakpoint in smartform itself while 
writing codes.

if i m incorrect then please correct me.

Hi,

You have to execute the smartform in TCode Smartforms and 
when you get the Smartform FM name like /B112098183221. 
then you have to press the display button then you will get 
standard SAP Code in that scroll down to last to find 
Subroutine PERFORM GLOBAL_CLEAR%, then double click and go 
inside....you will get all the code which you have written 
in Smartform and can put break point and once you run the 
smartform driver program the control stops in 
smartform,where you put the Break Point.

All the answers are correnct, But in production u cant 
write break point in smartform. So overcome this , see 
below method.

Tcode > smartforms > F8> 
u will get a FM exp : /1BCDWB/SF00000138
Now go to SE38 and add 'L' before S and add 'F01' and the 
end. So this will become /1BCDWB/LSF00000138F01
now add break point where ever u want.
Enjoy SAP
Kausihk