Account assignment object in the availability control ledger on which FM budget data and commitment/actual data is updated for the availability control check.

Updating Funds Management posting data to the corresponding control objects of the availability control takes place on the level of budget addresses. This ensures that both budget data and commitment/actual data is updated on the same control object and that budget consumption can be controlled.

By default, a 1:1 assignment is supported between the budget addresses of Funds Management and the control objects of the AVC ledger. If you want to update the posting data of several budget addresses in an availability control object, you must define this in a customer-defined derivation strategy.

You define the account assignment of an availability control object (control object) by defining an FM account assignment strategy on the control object of an AVC ledger. You can use the CO-PA derivation tool to define the derivation strategy. In a derivation strategy, you define the reference between source fields and target fields, whereby the source and target fields are account assignment elements and other Funds Management parameters.

You define a derivation strategy in the Customizing of Funds Management, under Budget Control System (BCS) ® BCS Availability Control ® Settings for Availability Control Ledger ® Define Account Assignment Derivation for Availability Control Object.

The following example explains the connection between posting addresses and budget addresses in Funds Management and the corresponding availability control objects of the AVC ledger.

In this example, budget address data A and B of Funds Management is summarized into control object AB in the AVC ledger. Here is a description of the two derivation strategies of the budget control system:

1. The budget data entered on the budget addresses is updated and summarized in the AVC ledger to control object AB according to the derivation strategy for the control object.
2. The two-step derivation of commitment/actual postings is depicted as an example of a purchase order that takes place on posting address A1.

1. Corresponding budget address A is determined for the posted purchase order according to the derivation strategy defined in the budget structure for budget addresses.
2. Further updates of consumed amounts in the AVC ledger are based on the derivation strategy for control objects. The corresponding control object AB is determined from the budget address determined in step 3a.