How/Where to define an App ID Prefixes in Xcode?

Here is the link https://developer.apple.com/account/#/membership/

Your App ID Prefix is the same as your Team ID.

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I thought App ID should be defined in Member Center.

Here's the link to create a new App ID https://developer.apple.com/account/ios/identifiers/bundle/bundleCreate.action

In this page, you can see "App ID Prefix", that is associated with your team.

Hope this helps!

Here is the link
https://developer.apple.com/account/#/membership/

Your App ID Prefix is the same as your Team ID.

You can also use this link to see it directly:
https://developer.apple.com/account/ios/identifier/bundle

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