Support for Number of Customers in API
You can now easily get the number of Customers linked to your Project using API and use the CustomerCount in workflows and validation rules.
How it Works
Example #1 - Validation Rule (on Project Customer Link)
Example #2 - Workflow Rule
Non-blocking action, with Red Notification
Example #3 - Custom Action
Show the "Set a Rate Card" action only if there are customers linked.