title: AppService VNET Integration Fails with VNET is already occupied
body: <p>I had an older version of appservice Plan which was connected to a VNET/Subnet . When i wanted to upgrade it to VNET integration the appservice plan was completely deleted. But when i try to redeploy the App service plan using the same VNET/Subnet this fails with below error.</p>
  <pre><code>Status Message: {
   &quot;Code&quot;: &quot;Conflict&quot;,
   &quot;Message&quot;: &quot;Subnet xxx-subnet in VNET xxx-vnet is already occupied by service ***/providers/Microsoft.Web/serverfarms/shared.&quot;,
   &quot;Target&quot;: null,
   &quot;Details&quot;: [
   {
   &quot;Message&quot;: &quot;Subnet xxx-subnet in VNET xxx-vet is already occupied by service ***/providers/Microsoft.Web/serverfarms/shared.&quot;
   },
   {
   &quot;Code&quot;: &quot;Conflict&quot;
   },
   {
   &quot;ErrorEntity&quot;: {
   &quot;ExtendedCode&quot;: &quot;55914&quot;,
   &quot;MessageTemplate&quot;: &quot;Subnet {0} in VNET {1} is already occupied by service {2}.&quot;,
   &quot;Parameters&quot;: [
   &quot;xxxx-subnet&quot;,
   &quot;xxxx-t-vnet&quot;,
   &quot;***/providers/Microsoft.Web/serverfarms/shared&quot;
   ],
   &quot;Code&quot;: &quot;Conflict&quot;,
   &quot;Message&quot;: &quot;xxxx-subnet in VNET xxxx-t-vnet is already occupied by service ***/providers/Microsoft.Web/serverfarms/shared.&quot;
   }
   }
   ],
   &quot;Innererror&quot;: null
  } (Code:DeploymentOperationFailed)```
  
  
  Not sure how we can proceed here as cannot find the older app service plan in Portal as well.
  
  </code></pre>