The statement

The difference itself, in one sentence, tied to a customer need.

The part

What it is

Length is the enemy. A difference that needs qualification is usually several small differences, none of which is decisive.

It should name a need from the pain or gain list, otherwise it is a feature claim wearing different clothes.

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.

Difference
One sentence, held fixed so it is not restated differently by every team.
Statement shared type
Need addressed
The pain or gain it relates to, which is what makes it matter rather than merely be true.
Reference shared type
Applies to segment
Differences are frequently segment-specific; unqualified, they overreach.
Entity shared type