The scope must also include any processes that
interconnect with this flow such that they have a
significant impact on the responses, the meaning of
significant being defined by the level of model accuracy
required.
• For instance, the manufacturing model must include
any processes that interconnect with the production
flow and have a significant impact on the throughput.
• If the supply of raw materials has only a small impact
on the throughput, because material shortages are
rare, then it is probably unnecessary to model them.