What's the trick to place vertical nozzles on vertical vessels/tanks? The top nozzle on the heater is on the vessel centerline. CII (B120131) gives Error 80E with the text "At Nozzle Node ..., the Nozzle and Vessel centerlines are the same."

See attached picture. Of course they do share centerlines but why is that an issue and how do I work around it?

This is an issue because WRC only addresses cylinder-cylinder intersections. There are many posts on this topic, please use the [Search] facility.