Office 365 APS has been upgraded recently. Further
Provisioning "Subscription" tasks are failing with:
"code": 500, "message": "no service with resource type 'http://www.parallels.com/Office365/Domain/1.3' in package Office 365-16.8.3-76",
while task to upgrade APS resources completed successfully and resource schema file contains proper version.
Office 365 instances were not upgraded one-by-one or IIS service was not restarted.
iisreset command once more on O365 Endpoint host and then recycle all application pools forcibly. Check that no parent www process left alive.