Definitions · The calculation · Element
The timing
When something is counted.
The part
What it is
On order, on delivery, on invoice or on payment. The same underlying activity produces different numbers depending on which.
This is the single most common source of two teams reporting different figures for the same thing.
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.