What is the bundle seed id for an iOS app?

Question

In order to share keychain information between applications, we needed to setup a shared keychain access group. Before the sharing would work correctly, both apps needed to have provisioning based on the same bundle seed ID. I wants to know what is that seed id is it same as app id or different ?

Two share keychain information my both apps should be on the appstore. Because I just make an sample project to check sharing of keychain information. Is it possible to do that without publishing it to Appstore?

Note :- My bundle id is just "com.comapny_name.myapp" and in Itunes connect I am able to see only my app id - (10 digit number) and bundle id which is same as I mentioned above.

Answer 1

According to AppYourself.net on this page,

Each App ID consists of a universally unique 10 character "Bundle Seed ID" prefix generated by Apple and a "Bundle Identifier" suffix that is entered by a Team Admin in the Provisioning Portal. The recommended practice is to use a reverse-domain name style string for the “Bundle Identifier” portion of the App ID. An example App ID would be: 8E549T7128.com.apple.AddressBook.

As such, the bundle seed ID is part of the app ID.

Hope this helps!