Field help (FDMA) @ L.V. Expertise X3

Many factors affect the availability of a component such as demand and replenishments, free stock and lead times. This date is calculated by your system. It is the suggested earliest date when the availability of this component can cover, in full, the required quantity. The calculation observes the following principles when determining each 'first availability' date:

It recognizes existing assignments;
It consumes any free (available) stock (where Free stock=Physical stock - Allocated stock - Assigned stock);
It considers expected receipts;
It determines if unassigned stock awaiting partial assignment to an order can be used;
It makes minimal changes to existing assignments;
Where shortages (calculated as Demand - Allocated stock - Assigned stock > 0) exist, it runs the calculation based on the lead time for the shortage only.

This date is only a reference date. It is an indication of the 'First Date of Material Availability'.