I work in IT. Recently, my company decided to update the database system, which means thousands of sales and procurement stock keep units must be realigned and updated. But the sales and procurement teams are so unhelpful. We have had meetings explaining the framework and timeline, but the salespeople don’t want to do anything, while the procurement department just keeps throwing the ball to sales. We are the support team and always get blamed for any delay from these two departments. How do I communicate with these people?