SAP NetWeaver AS ABAP Release 740, ©Copyright 2014 SAP AG. All rights reserved.
No Implicit Field Names When Calling Dialog Modules
In ABAP Objects, the following syntax causes an error message:
CALL DIALOG ... EXPORTING f1 ... fn
IMPORTING f1 ... fn.
Correct syntax:
CALL DIALOG ... EXPORTING f1 FROM f1 ... fn FROM fn
IMPORTING f1 TO f1 ... fn TO fn.
Reason:
The use of implicit names can cause errors. With the implicit method, the system tries
to find global data objects in the called program whose names are literally the same as the names specified
after FROM or TO. If offset/length specifications or preceding selectors are used in the names, data objects with identical names cannot exist in the called program.