Some of the achievement items out right don't exist on the PS4/PS5 versions of minecraft. I am lead to believe they are not in the files of these versions as when a player on another version uses them, nothing shows up.

Steps to reproduce them not being in menu.
1. Go to character creator menu on PS4/PS5.
2. Realize there are no achievement items.

Steps to reproduce them seemingly not existing.
1. Join a PlayStation player while on another platform.
2. Use a achievement item

Expected result
the cosmetic shows up as usual

Actual result
the cosmetic does not exist at all and the player just has nothing on them.