Routines in Transformations

You can use routines to define complex transformation rules.

Routines are local ABAP classes that consist of a predefined definition area and an implementation area. The TYPES for the inbound and outbound parameters and the signature of the routine (ABAP method) are stored in the definition area. The actual routine is created in the implementation area. ABAP object statements are available in the coding of the routine. Upon generation, the coding is embedded in the local class of the transformation program as the method.

The routine has a global part and a local part. In the global part you define global data declarations 'CLASS DATA'. These are available in all routines.

You can create function modules, methods or external subprograms in the ABAP Workbench if you want to reuse source code in routines. You can call these in the local part of the routine. If you want to transport a routine that includes calls of this type, the routine and the object called should be included in the same transport request.

Transformations include different types of routine:
Start routines
Routines for Key Figures or Characteristics
End routines and
Expert routine.