topic Re: Screen-Required and error messages in Application Development and Automation Discussions

Screen-Required and error messages

bryan_cain — Fri, 26 Jan 2007 19:40:51 GMT

Hi all,

I have a question with the "screen-required" component of a selection screen. I have a checkbox (p_hist) that when checked, controls whether or not another field (pdate) is mandatory. The problem is, if you check p_hist accidentally and then uncheck it without populating pdate, SAP raises an error message that you need to populate all required fields.

Is there a way around this besides not using screen-required and instead just checking that the pdate is not initial if p_hist is not initial? I know that will work, but I'd rather give the user some visual clue that the field is now required before giving an error message.

Thanks

Re: Screen-Required and error messages

Former Member — Fri, 26 Jan 2007 19:51:06 GMT

HI Brian,

try like...

At selection-screen.

if p_date is initial.

if not p_hist is initial.

throw error message.

else.

nothing to do cos check box is not selected.

endif.

Regards

SAB

Re: Screen-Required and error messages

bryan_cain — Fri, 26 Jan 2007 19:54:13 GMT

Hi Syed,

Yes, I thought of that. And I'll use it if I have to, but I prefer the idea of using the screen-required becuase that way when you check p_hist you can see on the screen that the field is now mandatory.

Thanks

Re: Screen-Required and error messages

Former Member — Fri, 26 Jan 2007 20:03:34 GMT

Unfortunately once you make a parameter required, you cannot change it back to optional unless you enter a value in there. 'Required' property is checked even before calling at selection screen output.

Re: Screen-Required and error messages

Former Member — Fri, 26 Jan 2007 20:07:10 GMT

You could put a comment (say an asterisk) before or after fields which you want to be mandatory.

Rob

Re: Screen-Required and error messages

bryan_cain — Fri, 26 Jan 2007 20:15:40 GMT

That's a really good idea, thanks.

Re: Screen-Required and error messages

Former Member — Fri, 26 Jan 2007 20:20:53 GMT

Glad to help. I'm a firm believer in looking for simple solutions.

Rob

Re: Screen-Required and error messages

bryan_cain — Fri, 26 Jan 2007 20:38:48 GMT

So who gets the extra four points? You or Srinivas? He answered my question, but you gave me a solution. Hmm...

Re: Screen-Required and error messages

Former Member — Fri, 26 Jan 2007 20:45:26 GMT

In cases like this, I think you can mark it as "solved on your own". Or you can assign more points.

Rob

Re: Screen-Required and error messages

bryan_cain — Fri, 26 Jan 2007 20:46:52 GMT

Since I think you both gave equally correct answers, I will mark as solved on my own.

Thanks again.