The Inventory Report Entry Table
The source of the value in this field depends on the type of the inventory period entry.
If the type is Item, this field contains the sum of the values in the Cost Amount (Actual) field for the value entries that contain direct costs of sales for the item that this inventory report entry describes.
If the type is G/L Account, this field contains the sum of the values in the Amount field in the G/L entries for the COGS account that this inventory report entry describes.