The GCS2 as a Demand-Based Methodology requires to define with more specificity how things work in Supply Chain Management such as SCM Flows, Periodicity, the basis for measuring performance, lead times, etc.
GCS2 Definitions

Number 1 in Supply Chain Management
The GCS2 as a Demand-Based Methodology requires to define with more specificity how things work in Supply Chain Management such as SCM Flows, Periodicity, the basis for measuring performance, lead times, etc.