I have made a datapack that adds a few more bosses and gear sets which seems to work without issue on any singleplayer world, but as soon as I try to put it on my server it doesn't want to work. Is there something I have missed to make this work on a server? More Apothic Bosses.zip

Define "doesn't work"; are you getting loading errors? Is the functionality incorrect?

If it doesn't show up in /datapack list you are having an issue before it even reaches apoth in that you don't have it loaded properly. What method are you using to load it?

To the server it seems to not exist - doesn't show up with "/datapack list" and none of the apotheosis debug commands have anything from the pack while they work fine on singleplayer worlds.

Is that the actual zip you are attempting to load on the server? If so the root of the datapack needs to be the data folder and pack.mcmeta not the enclosing folder

I'm using the global datapacks mod and all of the other datapacks in the "required_data" folder are functioning fine

Ok, it was the folder in the .zip, my bad