IDOC does no effect on data in LSMW project

[r2-d2]

Hello everyone.
Im trying to implement LSMW project to change func.locs (Bus.object = BUS0010), method CHANGE.
Everything seems to be OK. But when I go to step 15 in LSMW I see lots of idoc's with green status 53, but they dont make any changes to functional locations. I need a clue , where to check how to make idoc to make changes to the corresponding objects.