📖What it means

The track whose work a call actually is, which decides which slot runs it. It can differ from the track that PAYS for the call, and the two were once one lookup -- so naming a payer moved the call onto another model. They are two questions and are answered separately.

📖Easily confused with

[{"term": "Paying track", "distinction": "The paying track answers which budget is charged; the serving track answers which slot runs the call (rule 1672)."}]

📖Nuance

Ruled 2026-09-10 (cookbook 1672).

📖Also called

- the track a call serves

📖Filed under

Category: work.

Service: Cost Center.