CYLCE COUNT API

Hi ,

I am doing the  Cycle counting process in the Inventory module and i need some clarification on the same.

In the Cycle Count Entries screen , we will be passing the quantity for each item to be updated in the system . Once we enter the quantity for each item  in the screen , we will just save the screen which would update the quantity for all the items in the system.

So , do we have any pre defined API that would be taken care of this process or is there any concurrent program which would make the things done ? 

And if we have a conucrrent program , can you please let us know the interface tables that are involved.