The departures

When the rules may be broken, and by whom.

The part

What it is

A system with no exception route gets exceptions anyway, decided by whoever is closest to the deadline.

Recording departures makes the pattern visible, and a rule departed from repeatedly is usually the rule that is wrong.

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.

Departure
What was done differently.
Text shared type
Approved by
Who authorised it.
Person shared type
Reason
Why, which is what shows whether the rule needs revising.
Reason shared type