title: New-AzResourceGroupDeployment: Cannot retrieve the dynamic parameters for the cmdlet
body: <p>Though I know the answer, I just thought I would drop this question here for anyone else that comes across this error message. There doesn't seem to be anything coming up in my search results.</p>
  <p>When running an Azure Resource Manager Template with this command:</p>
  <pre><code>New-AzResourceGroupDeployment -WhatIf -ResourceGroupName my-rg -TemplateFile my-rg-tst-parameters.json -TemplateParameterFile .\my-rg-tst-parameters.json
  </code></pre>
  <p>I'm getting this error:</p>
  <blockquote>
  <p>New-AzResourceGroupDeployment: Cannot retrieve the dynamic parameters
  for the cmdlet. Parameter type in parameters cannot be null or empty</p>
  </blockquote>