Hi,
From FM point of view, as soon as you assign relevant commitment item, there is no difference between P&L account and balance sheet account. Make sure, that your commitment item is not defined as statistical. Also, verify that FM address derived is the one you had in mind: you can set a trace in FMDERIVE to confirm this. If everything seems to be correct, execute FMAVCREINIT in order to make sure that AVC is duly initialized. Additionally, you have to check your system of AVC derivation strategy and tolerance profiles, if any.
Regards,
Eli