Lifecycle · The replacement schedule · Element
The plan
What happens at replacement — the successor, the budget, the transition.
The part
What it is
A replacement date with no budget line behind it becomes an emergency purchase in the same year the budget said no.
The transition is the part that is underestimated: running both, migrating, retraining, and disposing of the old asset.
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.