EXCLUSIVE: SAG-AFTRA has ordered its members not to work on Keys to the City, a basic cable movie that’s in pre-production in Atlanta. SAG-AFTRA members set to star in the film’s predominantly African-American cast include Isaiah Washington, Felisha Cooper, Stephen Bishop and Kelsey Scott.

Disputes like these almost always are resolved with the producers signing the union’s contract.

SAG-AFTRA

The union says that the film’s production company “has not completed the signatory process. As such, SAG-AFTRA members are hereby instructed to withhold any acting services for this production until further notice.” The union also noted that “accepting employment or rendering services on Keys to the City may be considered a violation of Global Rule One.”

Under Global Rule One, SAG-AFTRA members only can work on projects signed to the union’s contract. The union says it “takes Global Rule One very seriously; violating it can result in disciplinary action ranging from reprimands to fines to expulsion.”

The film, set against the backdrop of an Atlanta mayoral race, reportedly is set to air next year on BET. Contacted by Deadline, one of the film’s producers declined comment, saying he’s “not willing to talk about it.”