Hi, I'm also integrating the passkey feature on my Mac and have meet the same error. Told not to present authorization sheet: Error Domain=com.apple.AuthenticationServicesCore.AuthorizationError Code=1 "(null)" ASAuthorizationController credential request failed with error: Error Domain=com.apple.AuthenticationServices.AuthorizationError Code=1004 "(null)" Application with identifier a is not associated with domain b I have config the apple-app-site-association link and use ?mode=developer