A resource group event is generated after a resource is transferred into or out of a resource group. You can view resource group events to obtain information about and audit historical resource groups to which resources belong from the resource group events. You can view events within previous 90 days.
Procedure
Log on to the Resource Management console.
In the left-side navigation pane, choose .
View the details of transfer-in and transfer-out events. The details include Resource ID, Resource Type, Region, Resource Group Name/ID, Transfer Type, and Time.