We are having a budget problem while changing a PO after having done the Goods Receipt. The Budget exceeded message (BP604) is raised only at the time of creation of the PO and before the Goods Receipt is done and accounted. The quantity and the price are controled.
But after the circuit that was fulfilled (the Goods Receipt is done and accounted and the committed budget becomes
real) we change the quantity or the price of the PO in order to exceed the budget and there is no control now. The available fund amount becames negative (negative value).