2. Auto-Scaling and Cloud Bursting : 2.4 The Upscaling and Bursting Process : 2.4.9 The Error Handling Section
   
2.4.9 The Error Handling Section
If adding a member to the pool fails, the remedy is to undo the changes:
*If the vApp was deployed (powered on), undeploy it.
*If the vApp was instantiated, delete the vApp, and raise an exception.
*If a virtual machine was added to an existing vApp, undeploy it, delete the virtual machine, and raise an exception.