Additional Process Information 

An important part of order controlling is the monitoring of allotted funds. The reports in the information system provide a passive method of availability control. You may also have to analyze the effects of a given actual posting on the available funds. For this reason, Internal Orders has an active availability control, which warns you immediately of any excessive allotted funds.

For more information on this example, see:

Manual Funds Reservations

Purchase Requisitions

Purchase Orders