azure-quickstart-templates for sql server 2016 cluster

Hi,

i was try to install this microsoft template (https://github.com/MSBrett/azure-quickstart-templates/tree/master/sql-server-2016-fci-existing-vnet-and-ad). i'm using Azure AD domain services the users i'm using are member of (AAD DC Administrators) for installation. while deploying i'm getting the following errors. any support highly appreciated.

• OPERATION ID
  56DD0C954C942078
• TRACKING ID
  db38a95d-a600-4d58-a982-3054b152ccab
• STATUS
  Conflict
• PROVISIONING STATE
  Failed
• TIMESTAMP
  1/17/2018, 2:11:04 PM
• DURATION
  18 minutes 3 seconds
• TYPE
  Microsoft.Compute/virtualMachines/extensions
• RESOURCE ID
  /subscriptions/96d29ba6-0c18-4d27-9d75-01b68e33f0f2/resourceGroups/RCT_RCI_PROD/providers/Microsoft.Compute/virtualMachines/rctdbcls-fci-1/extensions/sfciPrep
• STATUSMESSAGE
  { "status": "Failed", "error": { "code": "ResourceDeploymentFailure", "message": "The resource operation completed with terminal provisioning state 'Failed'.", "details": [ { "code": "VMExtensionProvisioningError", "message": "VM has reported a failure when processing extension 'sfciPrep'. Error message: \"DSC Configuration 'PrepSFCI' completed with error(s). Following are the first few: PowerShell DSC resource MSFT_xWaitForADDomain failed to execute Set-TargetResource functionality with error message: Domain 'riskcontroltech.com' NOT found after 20 attempts. The SendConfigurationApply function did not succeed.\"." } ] } }
• RESOURCE
  rctdbcls-fci-1/sfciPrep