[GalacticCmdr]

Possibly the values are all with range. It was just that this operation only worked on elements that were a subset. No amount of validation will catch that error.

You could feedback a clarification, but if that happens too often nobody will double check it after they have seen it over and over.

[fixermark]

While you can't prevent user error without preventing user capability, you can (as others have observed) follow some common heuristics to avoid common failure modes.

A confirm step in something as sensitive as this operation is important. It won't stop all user error, but it gives a user about to accidentally turn off the lights on US-EAST-1 an opportunity to realize that's what their command will do.