I've recently received such email and I hate these emails because the process it's often a pain. The user experience it's always horrible.
For example I live in Germany but I'm Italian and as EU citizen I can live everywhere in EU without necessary have a German ID, so I remember companies where I've upload an Italian one and every time it was rejected because they wanted a German one and then tons of email to explain them what had to learn by themselves before.
Other companies allows ID provided by difference countries, so if you are a foreigner it's not a problem, but someone wants also a photo took from your smartphone in order to match the ID, which is just another stupid source of pain, because than it happens like the Spain host here on Airbnb in another post.
He had upload his ID and then took a photo and the system rejected the photo saying that it didn't match with the one on the ID and to take one that match XD
How you can take a photo that match when the ID was provided for example several years ago? (my drive license expire in 10 years...)
A friend of mine went to this this exactly process for a bank account, but at least, when the system didn't recognize her selfie matched with the ID photo, an agent called and they solved there.
Dunno what will happen with Airbnb, let's see