AzureRmVirtualNetworkGatewayConnection for the ExpressRoute provisioningState": "Failed".

Hi,

We have an ExpressRoute set up for the our subscription.

I have successfully provisioned Virtual Network, Gateway and Connection in the West Europe Region.  The connection has been successfully established. 

I have did the same for the Northern Europe, but later has deleted the VirtualNetworkGatewayConnection, VirtualNetworkGateway, PublicIpAddress and  Virtual Network to change their names.

When I'm trying to re-provision  - all is fine, except the VirtualNetworkGatewayConnection. 

It is always failing, showing in the debug:

Body:
{
  "name": "ERC-NE-001",
  "id": "/subscriptions/GUID/resourceGroups/RG-NE-001/providers/Microsoft.Network/connections/ERC-NE-001",
  "etag": "W/\"GUID\"",
  "type": "Microsoft.Network/connections",
  "location": "northeurope",
  "properties": {
    "provisioningState": "Failed",
    "resourceGuid": "GUID",
    "virtualNetworkGateway1": {
      "id": "/subscriptions/GUID/resourceGroups/RG-NE-001/providers/Microsoft.Network/virtualNetworkGateways/GW-NE-001"
    },
    "connectionType": "ExpressRoute",
    "routingWeight": 0,
    "ingressBytesTransferred": 0,
    "egressBytesTransferred": 0,
    "peer": {
      "id": "/subscriptions/GUID/resourceGroups/RG-NE-001/providers/Microsoft.Network/expressRouteCircuits/XXXXXExpressRoute"
    }
  }
}

What could be the cause and how can I get some more output to try to sort this out?

Thanks!