Upon making changes to the interface, what must you do to ensure those changes are active?

To ensure that changes made to the interface are active, it is necessary to compile and restart the interface. This process essentially captures the modifications and applies them so that they can be executed in the system. When an interface is altered, it requires recompilation so that the code changes are integrated into the current version of the software. Restarting the interface is also crucial as it allows the system to run the newly compiled code, reflecting the updates made.

While documenting changes, testing, and informing the development team are valuable steps in the overall development process, they do not directly activate the changes in the interface itself. Documentation is important for tracking modifications, testing verifies that the changes function as intended, and communicating with the development team ensures everyone is on the same page—however, the immediate action needed to apply the changes is through compilation and restarting.