Hello Robert Bernstein,
The Azure portal usually provides more detailed error messages that can help pinpoint the specific issue.
Navigate to the "Deployments" section of your resource group RGB
in the Azure portal.
Click on the failed deployment named vmCreation-linkedTemplate-21e64d5e-9510-435c-87dc-3a20096fd659
to view detailed error messages and status codes.
please check and compare your code with this sample code if any required default parameters are missing
Hope this answer help you.
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