An Update Function Module is a special type of function module that executes update tasks (like DB changes, inserts, updates, deletes) asynchronously, after a COMMIT WORK.

They are processed in update work processes (type UPD or UP2) instead of dialog work processes.

Declared in SE37 with attribute “Update Module”.

 Example: CALL FUNCTION 'Z_UPDATE_SALES_ORDER' IN UPDATE TASK.

Types of Update Function Modules

There are two types of update function modules:

1. V1 Update Function Modules

• High-priority, synchronous updates.

• Executed immediately after COMMIT WORK and must finish successfully.

• Used for critical database updates (e.g., FI document posting, material stock changes).

• If a V1 update fails → the LUW (Logical Unit of Work) is rolled back.

• Processed in the V1 Update work process.

2. V2 Update Function Modules

• Lower priority updates, executed after V1 updates.

• Used for non-critical, statistical, or secondary updates (e.g., updating info structures, statistics, LIS, BW extraction).

• If a V2 update fails → does not rollback V1 updates.

• Processed in the V2 Update work process.

Example :

CALL FUNCTION ‘Z_UPDATE_MARA’
IN UPDATE TASK
EXPORTING matnr = ‘MAT001’.

COMMIT WORK. ” –> Triggers update task

• If Z_UPDATE_MARA is defined as V1 update → executed immediately after commit in update work process.

• If defined as V2 update → executed later, after all V1 updates.

Summary :