The problem is an error in the translation of the horse armor in italian, infact...
The iron horse armor have a translation different like the gold or diamond horse armor
Iron: Armatura di ferro per cavallo
Gold: Bardatura d'oro
Diamond: Bardatura di diamante
Related issues
duplicates
Comments
migrated
Thank you for your report.
However, your ticket has been resolved as invalid.
This ticket is a language translation request and is not supported on this bug tracker.
Please use the Crowdin Minecraft Translation Project for all translation change or add requests.