Which two actions resolve the Issue?

Refer to exhibit.

An engineer is troubleshooting tear down of control connections even though a valid Certificate Serial Number is entered.

Which two actions resolve the Issue? (Choose two)
A . Enter a valid serial number on the controllers for a given device
B . Remove the duplicate IP in the network.
C . Enter a valid product ID (model) on the PNP portal
D . Match the serial number file between the controllers
E . Restore network reachability for the controller

Answer: C,D

Explanation:

https://community.cisco.com/t5/networking-documents/sd-wan-routers-troubleshoot-control-connections/ta-p/3813237