Revenues Increasing the Budget 
This component comprises the functions with which you can increase existing expenditure budget for particular functional areas due to additional revenues.
In order for revenue postings to function as budget increasing, you must use the Financial Accounting components G/L Accounting and Accounts Receivable Accounting.
SAP provides three different automated procedures for increasing the expenditure budget in view of revenues intended for a specific purpose. You can also carry out the budget increases manually.
Distribution Procedure 1 (Document-based)
You use the distribution procedure if an expenditures FM account assignment is to get budget from revenues increasing the budget, irrespective of the actual requirement. This means that certain programs can be used to increase the expenditure budget at any time. In contrast to distribution procedure 2 (totals-based), in this procedure a link is established between the revenues document (FI document or forecast of revenue) and the budget document.
Distribution Procedure 2 (Totals-based)
In this procedure, an expenditures FM account assignment receives budget from revenues increasing the budget, irrespective of its actual requirements. You can increase the budget whenever you like with a program. In contrast to distribution procedure 1, in this procedure no link is created between the revenue and budget document.
Call Procedure
You use the call procedure if an expenditures FM account assignment may only claim additional revenue when required and to the amount required. What is meant here is that the expenditures FM account assignment holds no available budget itself, so that the posting of an expenditure would have to be rejected by the system. In this case, the revenues FM account assignment provides the required funds. With the revenues FM account assignment, this transaction is marked as the so-called “Cross-assignment”, but no budget is moved at this time. You can move budget of the revenues FM account assignments, in accordance with the cross assignments, as part of the fiscal year change operations.
Revenue cover pools group several revenues FM account assignments together and thereby facilitate an alternative test procedure for the call procedure.
Manual Budget Increase
You execute manual budget increases if an automated increase is not wanted or possible with the procedure available. You increase the expenditure budget manually by making a budget transfer posting from revenues FM account assignments to expenditures FM account assignments.
The automatic procedure is described in the master data maintenance on creating a set of general rules and account assignment-specific relationships between revenues FM account assignments andexpenditures FM account assignments in Funds Management. It is defined in the rules which part of a revenue for should increase the budget for which expenditures FM account assignment.
Apart from this, the rules define with which procedure the budget increase should take place and which event allows a budget increase; expected revenue, customer invoice, payment receipt, down payment, transfers of sales revenue.
You can use all the procedures at the same time and if necessary change the procedure for a mid-year FM account assignment. As distribution method 1 has a different data basis to the other procedures, the following restriction applies: Once the first budget increase for a revenues FM account assignment has taken place, you cannot select another procedure.