I've created a scope of check for a delivery which includes Safety Stock, Deliveries and Sales requirements. The problem seems to be Sales requirements.
If I have available inventory of 500 and place an order for 500, ATP confirms all are available today. If I enter another order for 100, ATP confirms a date in the future based on replenishment lead time. When I try to deliver the first order using VL01N, it will only create a delivery for 400 (500 available - 100 for the second order). Is there a way to have deliveries only consider sales orders that are confirmed for a date prior to or equal to the date selection on VL01N?