Select-options as a external subroutine

Question

hi all,
plz solve my problem.
this is my first program.
tables vbak.
select-options x for vbak-vbeln.
types : beginf of ty,
a tupe vbak-vbeln,
b type vbak-ernam,
end of ty.
data : itab type table of ty,
         wa type ty.
perform sub(znava) using x.
this is my secomd program
report znava.
form sub using x.
select vbeln ernam from vbak into table itab where vbeln in x.
loop at itab into wa.
write :/ wa-a,wa-b.
endloop.
endform.
in the above two programs are separate,and i am using external subroutine but it will show some error how can i rectify.
anyone plz guide me.
thanks and regards,
navneeth.
Edited by: Navaneetha KRISHNAN on Feb 19, 2008 5:50 PM

Answer 1

First of all SELECT-OPTIONS are TABLE type. 
You just can't use USING  keyword, you've to use TABLES keyword.
second point is,, in your second program are you defining ITAB and WA??? otherwise second program is not going to identify ITAB & WA... so I suggest you try like this..
"program 1.
TABLES vbak.
SELECT-OPTIONS x FOR vbak-vbeln.
PERFORM sub(znava) TABLES x .
"program 2
  TYPES : BEGIN OF ty,
  a TYPE vbak-vbeln,
  b TYPE vbak-ernam,
  END OF ty.
  DATA : itab TYPE TABLE OF ty,
  wa TYPE ty.
FORM sub TABLES x.
  SELECT vbeln ernam FROM vbak INTO TABLE itab WHERE vbeln IN x.
  LOOP AT itab INTO wa.
    WRITE :/ wa-a,wa-b.
  ENDLOOP.
ENDFORM.                    "sub