Types of Functional module

• There are 3 types of function modules.

1. Normal functional Module: These are works within the system.
2. Remote-Enabled Module : function module that can be called from other SAP or non –SAP system. Ex : BAPI.
3. Update  Function Module : It is basically used to bundle distributed updates within different programs spots, to one place (in FM). Update module in attributes of FM simply flags the FM not to be executed directly , hence can be only be excuted in update work process (using IN UPDATE TASK addition when calling FM) or in dialog work process (using SET UPDATE TASK LOCAL statement).

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