Homework / test Spanish to French Law/Patents Law (general)

So I'm currently translating a peruvian judicial decision and I don't know how to translate gestion de gerencia municipal to french. I thought about maybe resolution de gestion du mairie, since municipale isn't as used in european french, but am having second thougths about it. The target audience is for french people. It goes like this:

Que, mediante Resolución de gestión de gerencia municipal Nº160-2020-GM/MM de fecha 14 de julio de 2020 se declaró la Separación convencional de los recurrentes en mención;