Use Single Dye / Run Lot for Style / Color - System Options

>Utilities>System Options>Order Entry>Inventory

Category-Configuration

Type - Must be Global 

This option must be set to Yes to run Batch Inventory Allocator by Dye Lot.

If the System Option "Use Single Dye/Run Lot for Style/Color" is set to a yes, there MUST be dye lots associated with the inventory for the allocator to assign the material.