Message SAP BIL016 - The hierarchy for secondary installation &1 changes on &2

Diagnosis
The hierarchy defined by specifying a higher-levelinstallation will change on &v2& for secondary installation &v1&.However, this hierarchy should not change during the billing period.

System Response
The system will cancel billing.

Procedure
You should only change the higher-level installation for a secondaryinstallation when billing all the installations in theinstallation group.