Auto created Action Item BP from Meeting Meeting BP in Unifier throwing permission error

Hello All,

I have configured out of the box available meeting minutes business process in Unifier which would auto create action item BP record for each line item. I have selected the option to enable for initiation step for auto created Action Item BP. When I login into the Unifier with user id /pwd who has been assigned the Action item I am able to view the pending task in my task list however when I click on the accept task button it throws a error saying that "you do not have permission to perform this action please contact your company administrator".