Your request for 2 tasks was not successful.. Invalid action on workflow task or user does not have privilege to perform this action. Make sure that the action is valid with respect to the current state of the task or ensure that the user has privilege to perform this action on the workflow task]

I I stated in earlier post,Another bug in SOA 11.1.1.1.7:

This error pop up when we select more than two task in BPM worklist and try to claim all task once.

There is no functionality effect but it is very annoying for Client to cancel error pop up and then back to error page:

Oracle has created the bug.

Once patch will be release I will update here.

Bug 17882472 - MISLEADING PRIVILEGE ERROR ON CLAIMING MULTIPLE TASKS IN BPM MY VIEWS for bug 17768926