<Li> Shipping errors--The container labels are printed from the shipper . The labels are affixed to the containers in a staging area or when they are loaded on the transport . </Li> <Li> Production reporting--The best practice is to use bar code scanning to enter production into inventory . A product that is rejected should be moved to an MRB (material review board) location . Containers that require sorting need to be received in reverse . </Li> <Li> Replenishment--The best replenishment practice is replacement using bar code scanning, or via pull system . Depending upon the complexity of the product, planners can actually order materials using scanning with a min - max system . </Li> <P> In 2011, the third edition of "Orlicky's Materials Requirements Planning" introduced a new type of MRP called "demand driven MRP" (DDMRP). The new edition of the book was written, not by Orlicky himself (he died in 1986) but by Carol Ptak and Chad Smith at the invitation of McGraw Hill to update Orlicky's work . </P>

Explain with an appropriate example how a materials requirement planning (mrp) system works