Diagnosis
Workflow &V2& for multistep task &V4& had to be aborted, since noMessage recipient forcompletion of step &V1& could be determined via &V3&.

Procedure
You have the following alternatives:
Restart aborted workflow
Change the organizational plan, so that &V3& provides a number of usersother than zero. Then choose Restart After Error.
Change workflow definition
Change the message recipient completion of step &V1& of workflowdefinition &V4&. Then restart the workflow. The old instance witherrors can be dealt with using the function Delete Logically.