One of the companies I work for (which doesn’t use Epicor) has to track components that go into the products used for hazardous areas (explosion hazards).
The real goal of this tracking is that we could identify the serial numbers of the end products, given a specific component (or sub assembly) lot or serial number. For example, if a vendor notified us that they had accidentally put 100uF cap in where we called out a 1 uF cap, in a specific lot of boards they shipped us, we could see which work orders (Jobs in Epicor speak) had material issues of that lot of that part number. Then we’d find all the sub assemblies those sub-assy’s were used in.
We dont use S/N or lot tracking in the company that uses E10, but I’m pretty sure that when you issue serial or lot controlled materials, you provide the lot or S/N for each one issued.
If your inventory of component A has two lots, you’ll need to specify the qty from each lot, during material issues. And the sytem will keep track of how many you have of each lot, so it won’t let you issue 110 pc’s from a lot that was originally received as 100 pcs.