The MPMLink work definition converter thing (PTC.SCA.SCO.MPMLinkWorkDefinitionConverter) is configured to refer to a Connector thing (by default, PTC.SCA.SCO.MPMLink_ODataConnector) and a FileRepository thing (PTC.SCA.SCO.DefaultOperatorAdvisorFileRepository).

Update the Connector field to refer to your configured duplicate of the MPMLink OData Connector thing. If you create and use a different connector, update the thing specified for the Connector on the MPMLink work definition converter accordingly.

The thing specified for the FileRepository is used to store documents and illustrations pulled from Windchill MPMLink so that they can be retrieved in an offline fashion.