German antitrust authorities restricted Facebook’s ability to assign data from third-party apps to users’ profiles Thursday, a move the company disagreed with and said it intends to appeal.

Germany’s Federal Cartel Office, the Bundeskartellamt, said Facebook can continue to collect data from apps it owns, including WhatsApp and Instagram, but can’t assign data from the apps to users’ Facebook profiles without voluntary consent. Facebook will no longer be able to collect German users’ data from third-party websites without voluntary consent.