Because it is usually a document. Somebody rebuilds it after a reorganisation, and everything that depends on structure carries on using its own stale configuration.
A visual view of the reporting structure, generated from the reporting line each personnel record holds.
There is nothing to maintain. The chart is a rendering of the reporting lines, so it is current the moment a record changes.
A team moves under a new manager. The chart updates, approvals reroute, and team-scoped permissions follow — from one change to one field.
It does not model matrix or dotted-line reporting for routing purposes. A person has one approval line; secondary relationships can be recorded but do not route.
Approvals route by it. Record scopes use it. Loop reads team membership. Books reports by cost centre against it.
Reporting lines are dated, so historic structure is answerable.
Yes, as a view — but the live chart is the authoritative one.
They can be recorded as open positions from recruitment.
Fourteen days, every module, no card. Or half an hour with someone who will run it on your own records and tell you where it does not help.