EVENT
This Event is reached after calling up the update function module forFI (POST_DOCUMENT) in the form routine FI_DOCUMENT_POST. One of thefunction modules in which this routine is called up is FI_DOCUMENT_POST(FI interface).

INTERFACE
All data relevant to the current document is transferred. The indicatorI_XVBUP serves soley to inform you that the SAP standard system postsasynchronously.
It follows that no database activities involving the writing of datamay be carried out in the additional component.
The update including that of the tables specific to Add-ons are carriedout by the COMMIT WORK of the standard process. If your function moduleis not accessed via RFC, you should always initiate asynchronous updateposting using the ABAP statement
IN UPDATE TASK.