I am doing screen exit for Cost center master. While using KS03 transaction, I have to disable the newly added I/O screen fields. So, I added the following code in PBO module.
*** Include program of PBO
MODULE modify_screen_input OUTPUT.
IF sy-tcode EQ 'KS03'.
LOOP AT SCREEN.
IF screen-group1 eq 'CO'.
screen-input = 0.
But, screen fields with that group are not getting disabled. Is there any way to disable those screen fields?