Since I use my company name as the App ID, I am pretty sure that is unique. However, when I try to add that under Certificates, Identifiers & Profiles, I got an error message: An attribute in the provided entity has invalid value An App ID with Identifier 'com.***.yyy' is not available. Please enter a different string. The other ID is ok. If I use that same ID ""com.***.yyy in local development, will it be the reason why I cannot register now? Thanks!