how to switch two fields with one of them OBLIGATORY
i have two radio button on the screen: RD_A and RD_B, while there are two fields corresponding to them: P_A and P_B, P_A is OBLIGATORY.
i want to implment: when i click RD_A, field P_A is enable and field p_B is disable. when i click RD_B, field P_B is enable and field P_A is disable.
i tried using LOOP AT SCREEN ...screen-input = '0' and screen-required = '0' ....MODIFY SCREEN...statements, but it cannot work fine. when i switch from A to B, it always popup error message 'Fill in all required entry fields'.
can anyone help me? thanks in advance!