NBServerMigrator: Post migration, communication from target primary server fails with error 7658

Problem

Post migration, communication from Primary server to the Media/client servers fails with error 7658

Error Message

# bptestbpcd -client <client_server_name> -verbose

Output
PEER_NAME = <primary_server_name>
HOST_NAME = <client_server_name>
<16>bptestbpcd main: Function ConnectToBPCD(<client_server_name>) failed: 7658
<16>bptestbpcd main: Connection cannot be established because the host validation cannot be performed on the target host
Connection cannot be established because the host validation cannot be performed on the target host
# 

Cause

N/A

Solution

On the Target primary server, do the following:
1) List the CA certificates
/usr/openv/netbackup/bin/nbcertcmd -listCACertDetails
2) There should be two CA present on the target primary server. Remove both of them.
/usr/openv/netbackup/bin/nbcertcmd -removeCACertificate -fingerPrint <fingerprint_from_above_mentioned_command>
3) Run the following command:
 /usr/openv/wmc/bin/install/wmcUtils -changeUser <webservice_user> nbwebgrp
4) Redeploy the Certificates:
/usr/openv/netbackup/bin/nbwmc -terminate
/usr/openv/wmc/bin/install/configureWmc
/usr/openv/wmc/bin/install/configureCerts
/usr/openv/wmc/bin/install/setupWmc
/usr/openv/netbackup/bin/nbwmc -start
/usr/openv/netbackup/bin/nbcertcmd -getCACertificate
/usr/openv/netbackup/bin/nbcertcmd -getCertificate -force
5) Clear the cache on the target primary server and the media/client server.
/usr/openv/netbackup/bin/bpclntcmd -clear_host_cache
6) check the communication:
/usr/openv/netbackup/bin/admincmd/bptestbpcd -client <client_name> -verbose