Refer to the exhibit. An engineer is troubleshooting tear down of control connections even though a valid CertificateSerialNumber is entered. Which two actions resolve the issue? (Choose two.) 

Answer options:

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

AC

Reference: https://www.cisco.com/c/en/us/support/docs/routers/sd-wan/214509-troubleshoot-control-connections.html