Editing Material requirements planning (section)

===Data===
The data that must be considered include:
* The ''end item'' (or items) being created. This is sometimes called independent demand, or Level "0" on BOM ([[bill of materials]]).
* How much is required at a time.
* When the quantities are required to meet demand.
* [[Shelf life]] of stored materials.
* Inventory status records. Records of ''net'' materials ''available'' for use already in stock (on hand) and materials on order from suppliers.
* Bills of materials. Details of the materials, components and sub-assemblies required to make each product.
* Planning data. This includes all the restraints and directions to produce such items as: [[routing]], labor and machine standards, quality and testing standards, pull/work cell and push commands, lot sizing techniques (i.e. fixed lot size, lot-for-lot, [[economic order quantity]]), scrap percentages, and other inputs.