Checking Horizon for Availability Control 
Using the checking horizon, you can specify whether availability control should perform checks on annual data or on overall data.
Annual check: only budget data and commitment/actual data of a given fiscal year are taken into account for AVC checks.
Overall check: budget data and actual/commitment data of all fiscal years are totalled up for AVC checks.
You can choose between the following options:
AVC evaluates the master data information of the fund, as defined in the Funds Management master data section (column Budget Scope from the fund type defined in Customizing), in order to assign the value of the checking horizon.
AVC takes a ledger-specific default value for the checking horizon and ignores the master data information of the fund. This default value can be overridden by defining a derivation strategy for the checking horizon.
Caution
The value of the checking horizon is always assigned at the level of the control object. For example, the fund value of the posting or budget address from which the control object is derived is never relevant for this assignment.
If possible, choose the first option for standard AVC checks and use the fund master data information to assign the desired value of the checking horizon. You define your fund types in the Customizing of Funds Management, under , and yourfunds in the SAP menu of Public Sector Management, under .
The system automatically selects Checking horizon is entirely defined in fund master data , unless you specify a ledger-specific entry in the Customizing of BCS Availability Control.
You define the assignment of the checking horizon for availability control in the Customizing of Funds Management, under .