title: Being a Global Administrator in Azure portal I am unable to configure Continuous Delivery Preview
body: <p>Logged into Azure portal--> App Services-->Selected the Project-->Continuous Delivery Preview
  I see error message "You do not have enough permissions on this App Service to setup Continuous Delivery. Learn More: <a href="https://go.microsoft.com/fwlink/?linkid=843472" rel="nofollow noreferrer">https://go.microsoft.com/fwlink/?linkid=843472</a>" and Configure button is disabled. I am the Global Administrator and why I don't had the permissions to configure, where I can assign those access.
  Error message</p>
  
  <blockquote>
    <p>Failed to set Azure permission 'RoleAssignmentId: 9****a' for the
    service principal '2****3' on subscription id '****': error code:
    Forbidden, innner error code: AuthorizationFailed, inner error message
    The client 'my mail Id' with object id '***** does not have
    authorization to perform action
    'Microsoft.Authorization/roleAssignments/write' over scope
    '/subscriptions/*****'. For troubleshooting refer to link</p>
  </blockquote>