Submit the concurrent program gives APP-FND-01206

 Hello,

I wanted to reschedule an existing concurrent program  to notify different people which was already scheduled ...So Here is what I did

1) Cancelled the existing scheduled concurrent program which was in pending phase

2) After cancelling the program I tried to reschedule the same program by entering different users on the Notify section on the concurrent program Iam getting the below error

APP-FND-01206:This record already exists . You entered a duplicate value or sequence of values that must be unique for every record

Can you please suggest

Thanks,

Kiran