Activating Availability Control In The Background 
Prerequisites
In the budget profile, you selected Activation type two for availability control (background activation).
During background activation of availability control, the system checks whether the limit of the usage level stored in the budget profile has been reached or not. If it has been exceeded, then availability control is activated.
You can start the background run for availability control automatically and on a regular basis.
In The Project System (Same Procedure For Internal Orders)
In the Project System, select the projects for which you want to start the background run.

During background activation of availability control, the system creates a log for the objects for which you activated availability control. If you set the indicator for a complete log, all the other projects in the variant (object selection) are displayed, for which you did not activate availability control.
.Job Definition
You can start the background run for availability control on a regular basis by using a job definition.