LUW_MODE

0 - no COMMIT WORK, no ROLLBACK WORK ==> has to do manually after the FM returns

1 - COMMIT will be done in one go by the FM if everything is OK, otherwise ROLLBACK

2 - COMMIT or ROLLBACK will be done on any single infotype (one by one)

3 - can be used for simulation

(DIALOG_MODE has to be '0', otherwise any of the above makes no sense)

http://forums.sdn.sap.com/thread.jspa?threadID=1173944