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Since templates are idempotent, usually you can safely retry the migration operation to get past this error.If this error continues to persist, please contact Azure support and give them the Correlation Id.Ensure that the VM Agent is reporting overall agent status as Ready. Currently, only hosted services that have 1 or less Availability sets can be migrated.To work around this problem, please move the additional Availability sets and Virtual machines in those Availability sets to a different hosted service.
Because of the lock on the management plane after "Prepare" operation, any changes to the resource are blocked.NOTE: Once the incident is tracked by the support team, please do not attempt any self-mitigation as this might have unintended consequences on your environment.In the backend of migration service, we use Azure Resource Manager templates to create resources in the Azure Resource Manager stack.See https://aka.ms/regionalscope for more details . This error happens when the deployment being migrated has not had an update operation, which automatically moves it to a regional scope. The below instructions will allow you to workaround the issue.Best workaround is to either add an endpoint to a VM or a data disk to the VM and then retry migration. Cloud Page Blob Blob Type : Page Blob Length : 16106127872 Content Type : application/octet-stream Last Modified : 11/23/2016 AM Snapshot Time : Continuation Token : Context : Microsoft.