dynamic availabilty check - missing part list

Dear All,

We have activated automatic Dynamic availability check in our system.

As soon as I create maintenance order based on the planned delivery time if there is an insufficient stock during release, system will prompt me an message saying Material shortage for order u2018XXXXXXXu2019 and will display three option

1. Release Order

2. Missing Part List

3. Cancel

When I click the missing part list it will display Material number, plant, ATP quantity, ATP/avail.qty, Conf/Allocated qty, Cumulated ATP qty(Bun), Cumulated ATP quantity

My question here is

I have a material u2018Testu2019 with 10 number stock in unrestricted use.

I have 2 orders generated with reservation of 5 numbers(within the planned delivery days 30)

I have issued 2 numbers already for one order against reservation

Now I have total stock 8 and reservation 3

When I am creating a 3rd order with requirement quantity of 6 number and during release it gives me missing part list with all the quantity(ATP quantity, ATP/avail.qty, Conf/Allocated qty, Cumulated ATP qty(Bun), Cumulated ATP quantity) as 5 each for all the column

I am confused with the system behaviour for these column how it is displayed

could you guys please explain on the scenario? is anything going wrong or working correctly ?

If anything missed what needs to be activated for this?

Regards

Senthil