Could not find an entity set or function import for '<EntityName>'

Hello Team,

I am getting the below error while invoking the OData service. We are in 9.12.

The OData Service Namespace: WmSamplePkg.odataDemo:odataTest
External Entity Source: JDBC
External Entity Name: ORDER_INQUIRY

Url Used: http://host:port/odata/WmSamplePkg.odataDemo:odataTest/ORDER_INQUIRY ( With a Get Call)

Regards
Sasa