
Explanation:
Box 1: Standard
Standard conversions - Set up standard conversion rules for all products.
Box 2: Intra-class
Crayons are stored as separate item numbers depending on whether they are in a box or a case. This creates issues when counting inventory to determine the total number of crayons in stock.
Intra-class conversions - Set up product-specific conversion rules for units in the same unit class. For example, you can set up a conversion rule for a product that converts a box to the number of pieces in a box.
Pieces and boxes are both assigned to the Quantity unit class.
Incorrect:
Inter-class conversions - Set up product-specific conversion rules for units across unit classes. For example, you can set up a conversion rule for a product that converts kilograms to liters. Kilograms are assigned to the Mass unit class and liters are assigned to the Liquid volume unit class.
Reference: https://learn.microsoft.com/en-us/dynamics365/supply-chain/pim/tasks/manage-unit-measure
https://learn.microsoft.com/en-us/dynamicsax-2012/appuser-itpro/set-up-units-and-unit-conversions-retail- essentials