Quantity and Unit of Measure

Quantity

This field shows the exact quantity of the component required to assemble the base quantity in the BOM header.

If you enter a different required quantity, the system multiplies the component quantity by the required quantity you enter. However, if you define the component quantity as a fixed quantity, the component quantity is always the same, regardless of the required quantity.

The quantity is usually in proportion to the required quantity for the assembly or the order quantity.

You can define constant quantities as a fixed quantity.

The overview below shows you the special features of the quantities on the General Item Data screen.

Item and quantity

Items	Special features of Quantity
Non-stock items, document items, text items	Default value 1
Variable-size items	Quantity entered on Variable-size Item Data screen
Items with sub-items	Quantity calculated automatically from entries on Sub-Item Overview
Co-products and by-products	Negative quantities (for example, 3- )

Unit of measure

This field contains the unit for the component quantity.

The overview below shows you how the unit of measure is determined.

Determining the unit of measure

Item category	Determining the unit of measure
Material item with material master record	Unit of issue or base unit of measure from material master record; Can be replaced by any unit of measure that has the same dimension as the unit of issue or base unit of measure
Non-stock item without a material master, document item, text item	Unit defined in Customizing for Bills of material (step Define modification parameters); standard R/3 System has PC (piece)
Class item	Unit defined in the additional data of the class