Quantity proposal in Batch determination

Hi,

We are doing the batch determination in Process order for Batch and HU managed Raw materials.

I created two Process Orders

Requirement for Raw Material A in Process Order 1 = 1000 Lbs

Requirement for Raw Material A in Process Order 2 = 1200 Lbs

Stock of Batch 101 for Raw Material A = HU Quantity = 1500 lbs

When i do batch determination for Process Order 1, Batch 101 gets assigned for Qty = 1000 Lbs. I release the Process Order.

But when i do Batch determination for Process Order 2, the entire quantity of 1500 Lbs shows available, instead of remaining qty of 500 Lbs, as 1000 Lbs is already reserved for Process Order 1.

How do i make sure, that only difference is available for Process Order 2, i.e. only 500 Lbs?

I checked the scope of availability check and found to be OK. I also tried different Quantity Proposals 1, 2, 3, 4, and 600. But ii does not give the desired result.

Thanks in advance for your time.

With Regards,

Mangesh Kulkarni