Sharing key to apple watch

[mteras]

I installed the newest version on a RPi 3 with the pn532. Everything works great on my iPhone 13 pro max. When I try to share the key to my apple watch series 7 from the watch app "Wallet & Apple pay" I get the following error: "Could Not Add Key - Try again later. If the problem continues, the locks might have to be removed and added again in the Home app."

Am I doing something wrong or is this just apple trying to discourage diy stuff?

[kormax]

To me it looks like you've hit the limit of available cards on Apple Watch, which is 16 (unlike on iPhone with IOS17, where the limit is bound by memory and not via a hard cap.

If that's the case, just remove one-two credit cards from it.

If the issue persists, try adding virtual lock to the second home instance and check if a key is provisioned in that case.

[mteras]

Thank you for the quick reply. I tried removing a couple of credit cards from the watch, I had 5. That didn't help. Not sure I understood the latter correctly, I tried creating a second home, adding the virtual lock to that and the same error persisted.

[kormax]

In that case, I don't know what to suggest.

Key enrollment is a process performed by system HomeKit and SE services, triggered by a lock added into a home, but the lock itself does not take part in the enrollment process. So this project cannot cause any issues in this regard.

So the issue is with one of the following:

• User account;
• Device (perhaps a factory reset could help);
• Home installation;
• Not enough space on the SE.

[kormax]

Oh, and BTW. Normally you don't need to share the key manually, as the OS attempts adding it to your secondary devices automatically.

This makes me thing that there's something wrong.