New York City plans to enforce a first-of-its-kind requirement for warning icons on salty chain restaurant foods beginning June 6 after an appellate court gave the go-ahead to start issuing fines. But it’s not the final word on whether the regulation will stand.

A panel of the Appellate Division, First Department, on Thursday vacated a preliminary injunction issued Feb. 29 by Justice David Friedman holding off enforcement of the 2015 law.