ERROR (OSSHNL-524) - Nport

Hi,

I have instantiated an n-port cell from analogLib in ICADVM20.1. I am trying to netlist the schematic but I am getting this error message. Does anyone know what this error is and how to fix it? 

"ERROR (OSSHNL-524): Netlisting failed because the function 'hnlNetNameOnTerm' was called with a non-existent terminal 'common' on the current instance 'NPORT0' in the design 'sandbox_hasanafk/test/schematic'. Provide a valid terminal name with this function and regenerate the netlist.\n\n"

This is a 2-port nport.

Thanks.