Description of problem:
The ATP delivery date calculation for a sales order line does not take the dimension "inventory status" into account.
Therefore:
- The ATP overview is incorrect
- Calculated delivery dates following ATP or ATP + Issue margin strategies are wrong
- Delivery date control overview when applying ATP or ATP + Issue margin strategies is incorrect
- In summary: ATP based delivery date control is unusable when the inventory is segmented using multiple inventory statuses.

The inventory of a product variant is segmented in "VITESSE" and "WEBSHOP" inventory statuses.
From a sales order line for item "21000/01", site "Site 1", warehouse "NLWHSL", Size "8½", Color "BLUE" and inventory status "VITESSE":
- The ATP overview is incorrectly showing starting "On hand" as 6 (expected: 1)
- The ATP overview is incorrectly showing starting "ATP" as 5 (expected: 0)
- The calculated delivery date is incorrect as further ATP calculation over time is incorrect