How to fix my warning in OrCAD?
When you do a design rule check there is a radio box you can tick that displays warnings directly on the circuit. They look like green circles.

This warning is trivial if in reality - it means that all devices sharing that common net are not designated as an output. Normally one is an output whilst the others are inputs or passive. This is set up in the part library editor but, like I say it's trivial.