How to get user information from UDT based on interface value.

Hi ,

Would like to know if there is a way to get user information from UDT tables  based on interface value.

I tried accessing the 

Orion.UDT.AllIPEndpointConnections but get an error of "The parameter(s)  are missing for entity Orion.UDT.AllIPEndpointConnections"
Kindly request help on this.
Thank you