Message

Order line net amount SHALL equal (Ordered quantity * (Item net price/item price base quantity) + Order line charge amount - Order line allowance amount

Context
cac:OrderLine/cac:LineItem
Test
u:slack($lineExtensionAmount, ($quantity * ($priceAmount div $baseQuantity)) + $chargesTotal - $allowancesTotal, 0.02)
Usage
/ ubl:OrderChange / cac:OrderLine / cac:LineItem / cbc:LineExtensionAmount