SUMA ManufacturerParts

We are using SUMA in Windchill and want to see what AML/AVL a specific Manufacturerpart is in.

Since I apparently cannot use the service Things["ptc-windchill-integration-connector"].Structure_Get_Ancestors

to do this as it's probably not a normal parent-child link, I wonder what service we can use to get this information?

The SUMA typeID is com.ptc.windchill.suma.part.ManufacturerPart and the Structure_Get_Ancestors on an object gives an empty JSON.