after I added an App Groups in XCode it shows up an warning symbol (Add the "App Groups" entitlement to your App ID and Add the "App Groups containers" entitlement to your App ID). Before the warning there was a loading spinner like that:
after it finished the loading I got the following warnings:
What can I do to correct the two wrong steps? If I'm right it is already added to my App ID.
I faced the same issue, and in my case my apple id did not have the permission to add the "App Group".
If your account's type is "Member", not "Agent", then you need your Agent/Admin who has the main development account to add the "App Group" for you.
For me, what worked was having the phone attached. Once I attached it, Xcode was able to finish the process and the two red check mark problems were resolved.
For me, what worked was I had to changed the Bundle Identifier
because I was working with a project template I had downloaded from the internet.
You can change that in:
Project Navigator -> Target -> <Your target> -> General tab
After that, I checked the App Groups
and the warnings had gone
My problem was not having the App Groups set up correctly on all my App IDs on the Developer Portal. Therefor the App Groups in the app didn't work correctly.
You can just go to here and press fix issue to add your app ID, Bundle identifier and code signing first to your Developer ID