Apple has been accused of antitrust abuse in Germany as it prepares to roll out a new version of its iPhone software.

Axar.az reports that a complaint was filed to Bundeskartellamt, Germany’s competition regulator, on Monday. The news was first reported by The Financial Times and confirmed to CNBC by a Bundeskartellamt spokesperson.

Apple’s iOS 14.5 software — expected to be rolled out on Monday — will include a feature called ATT, or App Tracking Transparency. The feature will force app developers to ask users if they’re happy to be tracked for advertising purposes and many iPhone owners are expected to say no.

Companies that rely on online advertising, especially Facebook, have said that the privacy change will reduce the effectiveness and profitability of targeted ads and potentially roil the online advertising business.

The complaint was made by ZAW, the German Advertising Federation, on behalf of the nine industry associations that it represents. The association’s members include the likes of Facebook and media giant Axel Springer, which owns Insider and Bild.

ZAW argues in the complaint that Apple’s ATT feature abuses its market power and violates antitrust law.