Does anyone have experience writing a custom script a for Lot Items that need inventory details built? I want to write a script for an Item Fulfillment record that auto-selects the oldest lot and fills in all the details. Is this even possible?

Have you already evaluated FEFO Lot Assignments?

You can script it, and from a development point of view, do-able. (I've done it for a few projects)

Ohhh. Okay. So that’s what I’m trying to do but I keep running into problems. What were the major roadblocks that you faced when doing it?