About units of weight and volume

In the Units of measure (CS203100) window, you should create a unit of measure (UoM) to be used in your system as the base UoM for weight.
The weights of all sales and purchase orders will be calculated in this UoM. However, if the items differ in weight significantly, you can create other UoMs for measuring the weights of the base units of stock and non-stock items.
For each additional weight UoM, you must specify the rules for converting this UoM to the base weight UoM.

In the Units of measure (CS203100) window, you should define a UoM that will be used in your system to measure the volume that specific quantities of the items listed on sales and purchase orders can take. Define all other UoMs that may be used to measure the volumes that the base units of various items can take and specify the conversion factors with respect to the base volume UoM.

In the Inventory preferences (IN101000) window, select the base weight UoM in the Weight UoM field and select the base volume UoM in the Volume UoM field.

For each stock item, you can specify the weight (measured in a specific weight UoM) and the volume (measured in a specific volume UoM) of its base unit on the Packaging tab of the Stock items (IN202500) window. For non-stock items, you can specify such values (if applicable) by using the Non-stock items (IN202000) window.

For the item-specific weight and volume UoMS there must be rules for conversion to the appropriate base UoMs specified either in the Stock items (IN202500) window or in the Units of measure (CS203100) window.

If the Multiple units of measure functionality is enabled in your system, make sure that rules for converting each sales and purchase unit to the base UoM selected for the item are defined in the system. Also, if the Use a price adjustment multiplier check box is selected on the General settings tab of the Sales orders (SO301000) window, you can specify a price adjustment multiplier for the item.

With the base weight and volume UoMs selected in the Inventory preferences (IN101000) window and with weights and volumes of the base units of the items specified in the Stock items (IN202500) window, the system can calculate the weight and volume of the ordered quantities of stock items for each sales order. For each item, its quantity specified in the sales units is calculated in the base units and multiplied by the weight of the base unit.
You can view the weight and volume totals for the order on the Totals tab of the Sales orders (SO301000) window.

The freight rates are specified for shipping zones based on the total shipment weight and (optionally) volume.
The weight of a shipment is compared to break points, and the first one that is less than the shipment weight provides the freight rate.
The system calculates the freight cost based on the calculation method, Per unit or Net.

If the Automatic packaging functionality is enabled in your system, the system uses the packaging options specified in the Ship via codes (CS207500) window and the items' weight and volume to determine the packages (that is, the set of boxes) for each shipment.

The system can calculate the weight and volume of the received quantities of stock and non-stock items for each purchase receipt.

The landed cost specified for each purchase receipt can be split over the items listed in the receipt in proportion to the item weights or volumes (among other options).