Currently in my department we have two project teams and all of the data is handled by the data group. The PM for the project in question is extremely young and has no experience doing any sort of management. She was given that role by my boss. Her second-in-command is also extremely young and inexperienced and is also a personal favorite of my boss.
The head of the data group is older and has much more experience but can be very abrasive.
The problem is they all fight like children constantly. On the matter they are arguing over I agree with the data guy and have expressed that to everyone multiple times. But the developers still go on doing things the way they are used to doing them and then the data guy throws a little fit and gets mad at the developers and then they get mad and then they throw their toys at each other.
My first step was to move someone I know and trust into the room where they all work to try to keep things in check. I've had meetings with the group heads as well as meetings with everyone to try to set this straight but the bickering continues.
I am almost out of ideas. Other than telling them to play nice or I'll cancel recess the only thing I can think of is to have 1 on 1s with everyone involved.