From the forum post, two tables that relate to each other:

EmployeeMasterEntity (PK EmployeeID, FK Departments)
OrganizationalUnitEntity (PK OrganizationalUnitID, FK Managers)

With data like:

EmployeeMasterEntity
EmployeeID Department
1 10000001
2 10000002
3 10000001

OrganizationalUnitEntity
OrganizationaUnitID UnitManager
10000001 1
10000002 2
10000003 2

Will not return the correct results for a query such as:

http://localhost:8080/odata4/TestOdata.1/InterlemView/EmployeeMasterEntity(3)/Departments?$format=json

This is due to using the wrong relationship for the navigation.