I can think of very few kinds of connectors for which this type of error is even possible. You would need two cable terminations which can connect to each other, for which either side can plug into the same jack.
So either the ends are literally the same (e.g. Anderson Powerpole), or there is some kind of weird symmetry or inadequate keying. Or maybe the two cables don’t connect directly and instead go through some of kind of interface? The latter is fairly common in networking, e.g. “feed-through” patch panels and keystone jacks and quite a few kinds of fiber optic connectors.
All of these seem like utterly terrible ideas in an application where you would take the thing apart after final assembly and where the person doing the disassembly or reassembly could possibly access the wrong side of the panel.
One guy in our workshop had to provide DC to a display with a round 4-pin connector. He soldered two neighboring pins to Gnd and the other two to Vcc. There were two chances to short the powersupply, one to brick the display and one to get it right. Guess what we had to replace until we found out.
A break out box could very sensibly have both sides of the connector on it and then have the various pins broken out into individual connections for flexibility.
In that case keying or whatever isn't going to prevent you from connecting to the wrong side, because both sides are present.
So either the ends are literally the same (e.g. Anderson Powerpole), or there is some kind of weird symmetry or inadequate keying. Or maybe the two cables don’t connect directly and instead go through some of kind of interface? The latter is fairly common in networking, e.g. “feed-through” patch panels and keystone jacks and quite a few kinds of fiber optic connectors.
All of these seem like utterly terrible ideas in an application where you would take the thing apart after final assembly and where the person doing the disassembly or reassembly could possibly access the wrong side of the panel.