Capacity planning · The demand plan · Element
The volumes
Expected demand by period and by product family.
The part
What it is
Product family matters because different products consume the constraint differently, and a volume figure without mix tells you very little.
Committed and forecast demand should be distinguished, since only the first is a fact.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.