Issue in workflow workitem that gets triggered to two users at one time.

Question

Hi All,
Below are the query  details:
Module:  HR
Area:      Workflow
Process: Hiring
There is an workflow in HR module that is triggered when an hiring action is run against an candidate.
There are two or three maximum approvers  which is based on the position to which the candidate is hired.
Issue:
During the hiring process some times the workitem is getting triggered to two users at once.
One is the actual approver who should receive the workitem in his UWL and other is the user of our service center who is no where involved in the approval process.
Analysis Done:
We checked the workflow log and found that the actual approver's ID is getting displayed under agent and workflow is complete. But the other user's ID is no where shown in the log but he has received an workitem in his UWL that makes the issue still confusing.
Awaiting for experts suggestions.

Answer 1

Reply to Susan Questions:
You say that 'the workitem is getting triggered to two users at once' - do you mean that there are two workflow instances that are being kicked off at the same time when the hiring action is performed? Or is it that the workflow is generating two tasks that go to these different users?
Ans : There is a single task attached to the activity.
Is this a custom workflow?
Ans : Yes.
Are you certain that the erroneous task is only going to the user in the service center, or is it perhaps going to everybody (marked as a general task)?
Ans : The task is marked as general but the workitem is received by only one user of the service center at a time.
         As this issue has taken place 4 times in the past year all the 4 receiver were different belonging to different position.
Reply to Pavan Questions:
1. Did you try to check the SPRO settings with respect to Hiring Process ,is there any where based on the position does workflow is forwarding the workitem to the other user.
2. Check the other user Roles and in the Org Structure where he is located , there could be a possibility of wrong position holding.
Ans : We checked the org structure, but org structure of both the centers are different and independent there is no linkage    between the two.
*3. IF you are using custom workflow then check if any standard workflow is also getting triggered. Check *
Ans : Yes this is a custom workflow, but no other Standard workflow is being called.
4. Check in the SWEHR3 is any custom entries maintained.
Ans : No, entries are maintained in SWEHR3.
Additional Info :
The task that triggers the workitem has an send mail step before it.
The send mail activity is to notify receiver that there is an workitem lying in the UWL.This mail is received by the actual user and not by the other one.The next step is the task that creates workitem which gets triggered totwo different IDs.
This scenarios mostly has come up when the number of approver is 1. If the approver is more than 1 the  workflow runs fine without  deviating the workitem to any worng user.