topic Re: parameter mandatory in Application Development and Automation Discussions

parameter mandatory

Luca_Cavarretta — Thu, 15 Apr 2021 10:45:32 GMT

when i select a radiobutton, a parameter must become mandatory, how do i do?

Re: parameter mandatory

cris_hansen — Thu, 15 Apr 2021 11:17:16 GMT

Hi Luca,

You can check this question/answer and this ABAP documentation (in German).

Regards,

Cris

Re: parameter mandatory

BaerbelWinkler — Thu, 15 Apr 2021 11:21:25 GMT

mark.fry999

Hi Luca,

as far as I know, you'll have to do this manually with checking in AT-SELECTION-SCREEN. At least that's how I've done it in the past as you cannot define a selection-screen field as OBLIGATORY if there are radiobutton-dependent cases where it doesn't need to be filled.

Hope this helps!

Cheers

Bärbel

Re: parameter mandatory

Luca_Cavarretta — Thu, 15 Apr 2021 12:32:02 GMT

what should I write inside the AT-SELECTION-SCREEN. ?

Re: parameter mandatory

Patrick_vN — Thu, 15 Apr 2021 12:48:37 GMT

I think you can set/change the required parameter of a certain field in the AT SELECTION SCREEN OUTPUT event, so that the mandatory part is changed together with the radio button selection.

So something like this:

AT SELECTION-SCREEN OUTPUT.
IF relevant_radio_button EQ abap_true.
  LOOP AT SCREEN.
    IF screen-name = 'P_FIELD'.
      screen-required = '2'.
      MODIFY SCREEN.
    ENDIF.
  ENDLOOP.
ENDIF.

And of course assign a USER-COMMAND to the radio button group, so each change of option would trigger a round-trip (and thus make sure the OUTPUT event is triggered.

(code is written by heart, not completely sure the syntax 100% correct).