I'm trying to share the keychain of my main app with an app extension.
In both places my entitlements are added to the main app target and my extension, both with the values "$(AppIdentifierPrefix)com.example.MyGroupName"
I followed this [great] post on https://forums.developer.apple.com/message/75928#75928 to debug the issue and found the following:
<key>ApplicationIdentifierPrefix</key>
<array>
<string>SomeIdentifier1</string>
</array>
Of my mobileprovision.
Whereas my extension expects the Team ID.
How do I correct one of these so they both are using the same access group?