Hi;

Putting the first Operation as Parallel makes no sense and because of that we found some issues in the logic to retrieve the Executable Qty,

#Parallel Operation
Indicates whether the operation can be scheduled at the same time as the preceding non-parallel operation. Possible values are Parallel and Not Parallel.

According to this definition there has to be a preceding non Parallel Operation, but as per your data it is missing. When we say parallel, we say it is parallel to a Preceding non Parallel Operation.

So the correct way to put it mark the other Operations which running parallel to a preceding non parallel operation. 

Try changing Parallel to not Parallel in the first Operation and see if you get the Executable Qty right, then its an Old BUG 143098 which has been fixed sometime back.

Try applying this fix most likely fix this issue as well.

Hope you have some Qty Completed in all the Parallel Operations in your example and that information is not visible in the Screen dump. 

However in the Latest APPS10 we get the Executable Qty correctly. The under mentioned is a screen from APPS10