Problem Statement
In a complex, enterprise-level application, fundamental entities can be updated in various integration points or endpoints. You will build many business rules based on these entities' data. As the system grows bigger and bigger, it will be very difficult to track all the integration points that will update the entities' data.
In such cases, there are chances that it would be very difficult to get things right. It will be very hard to identify all integration points that will update the entities' data to plug the new business rules.