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I've been invited to join a developer team. As part of the process I have to create an Apple Id. However, I am unable to create it?

We have an VoIP app that supports starting VoIP calls using Siri. On devices running iOS 11 or 12 this functionality works well. However, it stopped working on devices running iOS 13.Scenario...1) User asks Siri to use our app to call one of their contacts2) resolveContacts is called, the contacted is matched, and the success result is returned3) confirm is called and a response is returned with .continueInApp and a userActivity4) At this point handle is not called and an iOS log is displayed such as the following...[Intents] -[INCache cacheableObjectForIdentifier:] Unable to find cacheable object with identifier FA0D8C9A-1A54-405F-9A7B-52D0E9DC2098 in cache.???Thanks,Doug