SAP MDG: Composite UIBB - List to List Possible ?

[SugguSandeep]

Hi SCN People, 

While i was trying to create wiring - Port Type not accepting 

Thank You, 

Suggu Sandeep.

[studencp]

Yes, it is possible 
below example from standard wire in MDG-M between Plants and Valuation Areas list UIBBs

you hide too much in your screenshot 🙂

it seems the trick is in connector class