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Please check if you have any storage accounts are not migrated for classic storage accounts to ARM.
If you don't have any storage accounts to migrate you can ignore the request.
If you are receiving repeated requests to migrate your classic storage accounts to Azure Resource Manager. You need to raise a support ticket with Azure
To create a support request for Azure, you need to have an Azure subscription and appropriate permissions.
You can get to Help + support in the Azure portal. It's available from the Azure portal menu, the global header, or the resource menu for a service.
Before you can file a support request, you must have appropriate permissions. To create a support request, you must have the Owner, Contributor, or Support Request Contributor role, or a custom role with Microsoft.Support/*, at the subscription level.
For more information: Create an Azure support request Hope this helps.
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