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ABENDDIC_STRUCTURES_ENH_CAT - DDIC STRUCTURES ENH CAT

- Enhancement Category of Structures

ABAP Dictionary structures and DDIC database tables that are delivered by SAP can be enhanced using customizing includes or append structures. These types of changes cause problems if the enhancements change the structure fragment view.

For this reason, structures and DDIC database tables are classified in order to be able to recognize and handle problems related to structure enhancements. This classification is used in the program check to create a warning at all positions where the program works with structures, and where later structure enhancements could cause syntax errors or changed program behavior. When a structure or a DDIC database table is defined in the ABAP Dictionary, the enhancement categories shown in the following table can be used as a classification.

The warnings from the program check are classified into three levels from the following table, depending on the effects of the allowed structure enhancements.

Example

If the structure ddic_struc in the ABAP Dictionary is defined only with flat components but is classified as Can be enhanced in any way, the following program section produces a warning in the syntax check. If the structure were to be enhanced by a deep component after the program was delivered, the program would have incorrect syntax and would no longer be executable. In this case, therefore either the structure ddic_struc must be classified in the ABAP Dictionary as Can be enhanced and character-like or else the offset/length cannot be specified in the program.

DATA: my_struc TYPE ddic_struc,
      str TYPE string,
      off  TYPE i,
      len TYPE i.
...
str = my_struc+off(len).