Hy Nabheet.
Thanks for Replay.
Exit Name : SAPMF02D
INCLUDE : ZXF04U01.
Code :
IF I_KNB1-BUKRS = 'CPLC' AND I_KNA1-LIFNR = ' '.
SET CURSOR FIELD 'KNA1-LIFNR'.
MESSAGE 'Please Enter Vendor Code in General Data->Control Data' TYPE 'E'.
ENDIF.
Thanks and Regards.
pradip patel.