Definition: (DOD) A subset of logistic planning and consists of a four-step process:
a. requirements definition. Requirements for significant items must be calculated at item level detail (i.e., national stock number) to support sustainability planning and analysis.
b. apportionment. Items are apportioned to the combatant commanders based on a global scenario to avoid sourcing of items to multiple theaters.
c. sourcing. Sourcing is the matching of available capabilities on a given date against item requirements to support sustainability analysis and the identification of locations to support transportation planning.
d. documentation. Sourced item requirements and corresponding shortfalls are major inputs to the combatant commander's sustainability analysis.
