TSR Integration->Manage OnBoard Status->Same tour is getting assigned multiple times.

Environment - LB (wt-stage)
1] Login to the application as a partner.
2] Navigate to Onboarding>Manage Onboard Status.
3] Select a employee for which multiple tours are assigned and not started. (Say T1 and T2)
4] Mouse hover on employee record where T1 tour is assigned to him.
5] Click on "Assign" link and try to assigned tour T1 to employee.
6] Application is not allowing to assign T1 tour again, but when we try to assign T2 tour it is getting assigned.

Actual Result:
Tour get assigned multiple time.
Expected Result:
Tour should not get assigned multiple time.
Refer attached screenshot for more details.

Saurabh Sablaka, Prasad Pise