How to use assign from other program ?

Question

is there any way to "point" ( assign ) on field of structure
in other program  ?
my goal is ...
i don't find any point of exit in ME21N  that hold the
last data of the quantity  "menge"  .
i done debug  , and i found that "MEPO1211" hold it ,
but it is not active in my exit  .
so ...
is there any way to be in my exit and point on
structure in other program  in my exit ?
thanks .

Answer 1

Hi dakota,
yes it  is possible. ABAP still supports the dynamic assign althought no official documentation on this is available.
I'm not on system now, so take the following sample and adapt to your needs.
CONSTANTS: BSL(20) VALUE '(SAPMF05A)BSEG-BSCHL'.
FIELD-SYMBOLS: <BSL>.
ASSIGN (BSL) TO <BSL>.
IF SY-SUBRC = 0.
* do what you want to do
ENDIF.
I guess, in your case it will be something like
field-symbols:
  <menge> type ekpo-menge.
ASSIGN '(MEPO1211)EKPO-MENGE' to <menge>.
IF SY-SUBRC = 0.
* do what you want to do
ENDIF.
Although the SAP docu said that it is for internal use and may be changed in the future it still works fine for all global structures, variables and even global internal tables.
Regards
Clemens