In order to restore unity, the Patriarch of Constantinople, Acacius, devised an irenic formula, which Emperor Zeno promulgated without the approval of a synod of bishops.
The Henotikon endorsed the condemnations of Eutyches and Nestorius made at Chalcedon and explicitly approved the twelve anathemas of Cyril of Alexandria, but avoided any definitive statement on whether Christ had one or two natures, attempting to appease both sides of the dispute.
All sides took offence at the Emperor openly dictating church doctrine, although the Patriarch of Antioch was pressured into subscribing to the Henotikon.
When Patriarch John I of Alexandria refused, the Emperor had him expelled and instead recognized the Miaphysite Peter Mongos, who accepted the Henotikon.
[citation needed] The schism caused by the Henotikon was officially settled in 519 when Emperor Justin I recognized the excommunication of Acacius and reunited the Chalcedonian churches.