Dynamic Action - To Lock the personnel no in IT0003

Hi All,

I have written a dynamic action for a scenario where, whenever there is a change in employment status (inactive-1) through an action (Change in employment status - AE), the personnel no field gets locked from backend. But somehow, its not working.

IT FC No S Variable Func

0000 04 421 P PSPAR-TCLAS='A'

0000 04 422 P T001P-MOLGA='40'

0000 04 423 P P0000-MASSN='AE'

0000 04 424 P P0000-STAT2='01'

0000 06 425 I MOD,0003

0000 06 426 W P0003-ABRSP='X'/D

Pls, guide where is it going wrong. If I remove /D then too screen for IT0003 doesnot get triggered.