I purchased a ticket on the Trenitalia app but don't see the button to "add to wallet." According to their website:
(Yes, you can add the ticket to the Apple Wallet immediately after purchasing the ticket or even later, displaying the details in the "MY TRIPS" section and selecting the "Add to Wallet" button)
I did save a screenshot to my photo gallery but would really like all my docs in the wallet. BTW, I have a Google Wallet, not Apple Wallet in case that matters.