A port produces a mesh error or appears shorted

Inspect the physical contact

1. Show the terminal object, its label and the target conductor together.
2. Check that the terminal clearly intersects the intended conductor and does not depend on an ambiguous edge-only contact.
3. Inspect the generated mesh/geometry near the terminal and read the first error.
4. Check that the two terminals excite the intended distinct electrical locations. If both are connected to the same shorted object, redesign the measurement/return-path model rather than expecting a meaningful branch voltage.

Keep workarounds versioned

In one legacy case, extending a terminal across the relevant polygon edges removed a zero-length-edge failure. This is a useful geometry check, not a universal solver fix.

Return conductors, shared terminal objects, airbridges and off-chip connections have version-dependent modelling constraints. Use the matching manual and a small test model before applying a workaround to a larger design.