Created this identifier:
Key: googleplay
Name: Google Play
Template: https://play.google.com/store/books/details?id={id}
Pasting in
https://play.google.com/store/books/details?id=AAAAAAA results in a URL identifier.
Entering googleplay:AAAAAAA works and leads to the correct link (though in this example, that's an error page).
Did I make a mistake, or is this a similar error to
the resolved one with slashes?