Referencing Availability Control In Projects 
Use
You can obtain an overview of the allotted funds in the display and change modes of the budgeting function.
Prerequisites
You have activated availability control.
Procedure
Choose Accounting ® Project System ® Controlling ® Budgeting ® Original budget ® Change or Display ® Original budget ® Extras ® Availability control. ® Reference.
Result
As well as the assigned and distributable (=budget - assigned) budget, the system displays (under controlling element) the budget carrying element that is on the next level up from a WBS element that does not have any budget in the project structure. On this controlling element, all postings (that were made on WBS elements with no budget) are cumulated as allotted funds.
The current assigned and distributable values are displayed after checks are made.