Topic
Some K2 Studio workflows could not be deployed after upgrading to K2 Five 5.6. The following error is thrown upon deployment:
"No such host is known."

Instructions
Please perform this on all applicable activities within your workflow:
- Open the Destination Rule of the activity.
- Under Destination Sets, re-map all users and/or groups that come from K2 Object Browser > User Browser .
After going through all the activities, save and deploy the workflow.
