Production flow · The WIP limit · Element
The limit
The maximum work allowed in the system or in a stage.
The part
What it is
Set from the constraint’s throughput and the target lead time, rather than from what feels comfortable.
A limit that is never reached is not a limit; one that blocks release regularly is doing its job.
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.