Following on from this post:

https://next.nutanix.com/move-application-migration-19/how-to-provide-guest-credentials-when-creating-move-plan-through-api-41667

Trying to add credentials to my move plan, via the prepare api -https://www.nutanix.dev/api_reference/apis/move.html#tag/Plan/operation/preparePlan

Anyone know the format or have an example of the prepare payload?  I have this:

{
  "Spec": {
    "RunInBackground": false,
    "GuestPrepMode": "manual",
    "CommonCredentials": {
      "WindowsPassword": "<<removed>>",
      "WindowsUserName": "user@my.domain"
    }
  },
  "VMs":  
    {
      "UUID": "1234567-bd99-5555-955f-d444094bd5fb",
      "VMId": "vm-123456",
      "Password": "<<removed>>",
      "UserName": "user@my.domain"
    }
  ]
}

and  get the following error:

Invalid input parameter for operation: 'prepare migration'. Parameter: 'PrepareVMsInput VMs'

The UUID & VMId matches the VMs in the move workload.