Azure cloud discovery – ServiceNow Community

I get this error message when I try to create Azure cloud discovery schedules. Can anyone explain why? 
I’ve been able to discovery the subscriptions successfully.

Identification Engine: Discovery status is FAILURE, Identification sections in pattern failed: section: Azure Subscription identification, error: Custom operation a6e5288173b363008c51d6dcb7f6a75e was not found. Make sure that the custom operation exists.. .

Any help would be appreciated.