Removal Phase. When a customer subscription to a service is ended the SLA and all associated configuration infor- mation in the service systems needs to be removed. The same service sub-systems that were ad- dressed for SLA creation are again involved for this step. The event that triggers SLA removal is the fact that the customer service subscription is not renewed, or actively ended. The service subsystems contain configuration information about this subscription, that information needs to be removed. Resources that were claimed to support this subscription need to be freed. Note that the configuration information for a given subscription can be aggregated with configuration information for other subscriptions. It is therefore possible that information needs to be changed, not just only deleted.
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