Answer / ravindra

SELECT-OPTIONS s_matnr for mara-matnr.

AT SELECTION-SCREEN.
if s_matnr-high is INITIAL.
message 'high cant be empty' TYPE 'E'.
ENDIF.

Answer / sagar

Yes,You are right.If we write statement as :
Select-options : vbeln for vbrk-vbeln obligatory.
then low value gets mandatory.

We have to write as :
Select-options : vbeln for vbrk-vbeln.
Now vbeln field is not mandatory.
Now we have to explicitly write code for making high value
mandatory in AT SELECTION-SCREEN event.

At selection-screen.
loop at vbeln where high is initial.
endloop.
IF SY-SUBRC ne 0.
MESSAGE 'HIGH VALUE CAN NOT BE BLANK' TYPE 'E'.
ENDIF.

Answer / rahaman shariff

This is much simpler..
AT SELECTION-SCREEN OUTPUT.

LOOP AT SCREEN.

IF screen-name = 'S_DATE-HIGH'.
screen-required = 1.
MODIFY SCREEN.
ENDIF.

ENDLOOP.

Answer / anand

There is only one change required in the given code and
that is IF SY-SUBRC eq 0.
Then the code will look like this

At selection-screen.
loop at vbeln where high is initial.
endloop.
IF SY-SUBRC EQ 0.
MESSAGE 'HIGH VALUE CAN NOT BE BLANK' TYPE 'E'.
ENDIF.

Answer / sarita dudam

Select-options : vbeln for vbrk-vbeln.

AT SELECTION-SCREEN.
Read table vbeln with key high = space.
if sy-subrc is initial.
message 'high cant be empty' TYPE 'S' display like 'E'.
endif.

Answer / sarita dudam

Select-options : vbeln for vbrk-vbeln.

AT SELECTION-SCREEN.
Read table vbeln with key high = space.
if sy-subrc is initial.
message 'high cant be empty' TYPE 'S' display like 'E'.
endif.

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