Paladin of Kelemvor, which means a Forgotten Realms campaign, yes?

This might be your solution.

Quote Originally Posted by Jaredino View Post
Since the paladins main purpose is to help souls pass on to the other side, trapping them in a corpse and forcing them to fight is like the ultimate heresy.
If I recall correctly, and it may have changed since then, under 3rd Edition rules and earlier skeletons, zombies, and other mindless undead in the Forgotten Realms setting are neutral, as they are animated bodies i.e. the equivalent of animated objects, where the "object" is a body; there are no souls trapped in the corpses.

Technically a necromancer is still desecrating a body by animating it (a non-Good act), but talk it over with the Paladin's player and see if you can come to an agreement that provided your character sticks to mindless undead only, they might have some leeway in-character.