SAP OO OBS CHARACTER 1 documentation, setup help and example usage

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Use Only Character-Type Fields When Processing Strings

When processing characters strings and, as of release 7.0, outside of classes, you can only use character-type fields (data types c , d , n , string , t and, in non-
Unicode programs , x and xstring also).

In ABAP Objects, the following syntax causes an error message:

DATA int TYPE i.
SHIFT int BY 3 PLACES.

Correct syntax:

DATA int(4) TYPE c.
SHIFT int BY 3 PLACES.

Reason:

The statements for character string processing treat their operands as character-like irrespective of their actual type, which may lead to undefined results in connection with fields that are not character-like.