Symptoms

Instance Error: An Activity with a client event should at least have one destination
 

Diagnoses

As shown in the attached image, we have some instance with error. The error message is "An Activity with a client event should at least have one destination".
We know why the error occurs, but we want to know how fix these error instances. It's possible assign this activity to another user?
 

Resolution

Using the Visual Studio K2 Process Management tool you can map an instance that is erroring out to a process version that does not error out. When opening the K2 Process Management tool you need to expand the 'Workflow Management Server Node' and expand the 'Error' node, and then select all. All of the errors that are active will be listed, and you can simply click on the error, and select 'Retry' to map to a different process version. After selecting retry if the workflow does not error out it will disappear. If it does error out then that means there is an issue with that version of the process as well. If the workflow disappears then that means that the process has flowed with it's intended trajectory in regards to the newly mapped process instance.