I am using thingworx 8.5 and integrity 12.2.1, which two servers configured with SSL.
through Integration Runtime i am trying to connect integrity
Please follow steps as you need Integrity cert as trusted:
keytool -list -keystore $JAVA_HOME/jre/lib/security/cacerts
keytool -import -noprompt -trustcacerts -alias <AliasName> -file <certificate> -keystore $JAVA_HOME\lib\security\cacerts -storepass <Password>
You can take a look also here: https://stackoverflow.com/questions/21076179/pkix-path-building-failed-and-unable-to-find-valid-cert...
Hope it helps,