BPCS 6.0.02. Has anyone ever had a situation where after a customer shipment ( -B transaction ) there will be a + B transaction which not only nullifies the shipment but will randomly grab quantities and also put them back into stock as well. We have been havong this issues initially with Mar98 Cum, but we recently moved to Nov02 Cum, (on advise from SSA who were convinced that this would solve the issue), and it seems to only have gotten worse. We are currntly trying to establish a chain of events that lead to this phenomena, but as yet, it seems totally random. Anyone got any ideas ??? Damian Stulner. I.T. Systems Manager. Fasco Australia.