How to get ProductID in my custom facet

Hi all

I have added new facet to Opportunity TI screen. I am trying to get the 'ProductID' from the Opportunity overview page.

Product ID in oppt overview page is associated with 'Opportunity/Item/ItemProduct/MaterialV1/InternalID' in BO Browser. But when I create a new tab using Extensibility explorer --> Add view to embedded component, it asks for binding. There I couldn't find the Opportunity outport with the same name.

In PublicOutportECOpportunityItem, there is no fields that matches with my inport. Is there any other approach to handle this? Or is this the standard outports we could access? If so there is a possibility to get ProductID or not??

Pls give your suggestions.

Thanks in advance

Regards

Swadini Sujanaranjan