Training on SAP Function Modules of SAP WM for FREE

In this Training, I provided details of below topics

- Usage of Transaction Code SE37

- How to test the Function Modules by using SE37 Transaction Code

- Training on Transfer Order Creation with FM

- Training on Transfer Order Cancellation with FM

- Training on Transfer Order Cancellation by Storage Unit with FM

- Training on Transfer Order Confirmation with FM

Types of Function Modules

Function Modules can be categorized based on their processing type, which determines how they are executed.

1. Regular Function Module

This is the standard and most common type of Function Module. It is executed synchronously in the same work process as the calling program. The program waits until the Function Module has finished its execution before continuing.

2. Remote-Enabled Function Module (RFC)

These Function Modules can be called from other SAP systems or even non-SAP systems. They are the backbone of communication and integration between different systems. To make a Function Module remote-enabled, the "Remote-Enabled Module" processing type must be selected in its attributes. This is the foundation for BAPIs (Business Application Programming Interfaces).

3. Update Function Module

Update Function Modules are designed to perform database updates in a separate update work process. They are not executed immediately when called. Instead, they are registered for execution and are triggered by a COMMIT WORK statement. This ensures that database changes are bundled into a single Logical Unit of Work (LUW), maintaining data consistency. There are two types of update modules:

• V1 (Primary) Update: These are critical updates that are processed first.

• V2 (Secondary) Update: These are less critical updates that are processed after all V1 modules have been successfully completed