Which facility is provided to debug a Cisco Unified CCX script live with a real...

Reactive debugging is a facility provided by the Cisco Unified CCX Editor that allows you to debug a Cisco Unified CCX script live with a real voice call. Reactive debugging enables you to step through the script execution and view the variable values and the call flow in real time. You can also set breakpoints and watchpoints to pause the script execution and inspect the variables. Reactive debugging is useful for troubleshooting and testing the script logic and functionality12

References: 1: Deploying Cisco Unified Contact Center Express (UCCXD) v6.0 - Course 644-906 1 2: Cisco Unified Contact Center Express Scripting and Development Series: Volume 2, Editor Step Reference, Release 10.0(1) - Debugging Scripts [Cisco Unified Contact Center Express] - Cisco