Introduction to Function Modules in SAP ABAP

 

  • Function modules are basically modularization techniques.
  • Function modules are ABAP routines that encapsulate program code and provide an interface for data exchange.


Types of Function Modules :-

1. Normal Function Modules :-

  • Normal Function Modules are blocks of reusable code with a specific functionality embedded in them, which can be called only within the SAP system in which it is defined.

2. RFC Function Modules :-

  • This type of functional modules, we are able to access from any other system which is defined as RFC destination(TCODE:SM59) for the main system , means the system which will have the functional module.

3. Update Function Modules :-

  • These function modules are used to update the database tables. Using the function module in updating the database table helps in updating the database without any irregularities.
  • To create a function module, we need to create a function group.

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