I am encountering thi serror when the user tries to complete the workitem from portal from his decision to approve or reject .
When he tries taking an action he gets this message You are not one of the recievers
It seems like workflow task agent assignment error, please check your agent assignment maintenance .
1. general task - every level employee can process the workitem
2. general forwarding allowed - om level employee's can process the workitem and foreword allowed
3. general forwarding not allow - om level employee's only can process the workitem
4. forward not allowed - responsible person is should do the workitem execution om level
please check your maintenance.
Hope this helps,