Can I trade in a different iPhone than the one listed in the order?

I recently picked up my 15 Pro Max and was going to give my 14 Pro Max to my sister, and use her 14 Plus to trade in. Of course, I forgot its locked.

Can I send in my 14 Pro Max with the label for my 14 Plus and get the 14 pro max price or will Apple reject it?

[Re-Titled by Moderator]