The sources · The source of truth · Element

The exceptions

Cases where a different source is correct.

The part

What it is

Regulatory reporting and historical restatement frequently require a different source, and pretending otherwise produces quiet inconsistency.

Naming them prevents the exception being treated as a violation.

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.