---
title: "PopulationStatement"
description: "the required statement of the population an answer was read over"
section: concepts
address: /concepts/populationstatement
contract: 0476e35e6e275db5
---

# PopulationStatement

the required statement of the population an answer was read over

[figure: PopulationStatement is a value at none scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | value |
| scope | none |
| key | none |
| store | none |
| family | rules_engine |



## Fields


| field | type | required | note |
|---|---|---|---|
| `store` | `one of the working set \| the refined layer \| the whole record \| a served table` | yes |  |
| `window` | [Window](/concepts/window) | yes |  |
| `units_in` | `count` | yes |  |
| `units_scanned` | `count` | yes |  |
| `channels` | [Source](/concepts/source) | yes | every channel of the tenant |



## Routes that use it
No route takes or returns PopulationStatement directly. The record holds it, and the objects that point at it reach it.