A method of producing a master sub-tier schedule for a Multi-tier Manufacturing
Requirements Planning (MRP) system comprising the steps of populating a database
with a plurality of identified part/supplier combinations for at least one finished
part, populating the database with a plurality of sub-process steps associated
with each of the at least one finished part, populating the database with at least
one supplier responsible for each of the plurality of sub-process steps, populating
the database with at least one lead time and at least one lot requirement associated
with each of the plurality of sub-process steps, and sending notification to the
primary consumer and the first tier supplier if necessitated by the reviewing of
the master sub-tier schedule.