Error Calling $model from WebCore app

BIZ TMS XData
1

I'm sure I had this error a long while back but can't find the answer now.

When calling

Await(DataConnection.OpenAsync);

I get the response

http://127.0.0.1:2027/Api/$model 400 (Bad Request)

The URL is correct

Any ideas?

2

First thing is to check the response body. Usually there is additional information there in JSON format.

3

TenantId missing