On attempt to switch subscription service plan or cancel subscription an error occurs:
Communication Failure: Method 'GetResourceUsage' is not available inside a Server
In the service plan the subscription is based on, there is a resource rate based on KAGATE (which does not support statistics collection), but configured to collect statistics. So, on performing some operation with the subscription BA tried to collect usage statistics from KAGATE, while KAGATE does not support it.
- Find KAGATE-based resource rates which have the setting "Controlled By" set to "Billing" (=the system attempts to collect the resource usage statistics for these resources).
- Change the setting to "External System"
- Synchronize the changes with the existing subscriptions (option "Update Prices" for resource rates is obligatory, "Install into provisioning system" can be set to "Do not install")