I've created an oData endpoint to return some very basic data.  This works fine from PowerBI, but is throwing an error in Tableau.  I need to get this resolved fast or my client will select PowerBI for their system (I'd prefer Tableau).

Let me paste the data below...

https://xxx/odata/report   returns this...

{

    "@odata.context": "https://xxx/odata/report/metadata#NoTokens",

    "value": [

        {

            "Message": "Please supply Token"

        }

    ]

}

https://xxx/odata/report/metadata#NoTokens returns...

<edmx:Edmx Version="4.0" xmlns:edmx="http://docs.oasis-open.org/odata/ns/edmx">

    <edmx:DataServices>

        <Schema Namespace="Canvas.Models" xmlns="http://docs.oasis-open.org/odata/ns/edm">

            <EntityType Name="NoToken">

                <Key>

                    <PropertyRef Name="Message" />

                </Key>

                <Property Name="Message" Type="Edm.String" />

            </EntityType>

        </Schema>

        <Schema Namespace="Default" xmlns="http://docs.oasis-open.org/odata/ns/edm">

            <EntityContainer Name="Container">

                <EntitySet Name="NoTokens" EntityType="Canvas.Models.NoToken" />

            </EntityContainer>

        </Schema>

    </edmx:DataServices>

</edmx:Edmx>

Can anyone give me some advice?