Add App Group entitlement

I'm trying to build an existing application that provides a Today widget. Unfortunately I cannot make the app to communicate with the widget. In the Capabilities section I get the following errors

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I've installed appropriate provisioning profiles and I've double-checked that the App ID in DevCenter includes App Groups. Fix Issues button throws an error as I don't have sufficient privileges in the team. What else should I try?

Solution

You have to have at least one device in your developer account at the DevCenter. Hope it helped.