Born Again Anima Quest - Weapon in Inventory Not Working

I don't understand why it's not working for Weapon Anima 260 in Inventory :'( ?? Born Again Anima said "Equipped or in your Inventory" lol?

I tried diff classes for MNK, I am doing MCH's Born Again Anima Quest because I was done MNK's Born Again Anima. I don't understand why it's not work "Or in your Inventory" I tried it.....

Are you on the job in question? Putting it in your inventory by switching classes won't help.