# AdaptableAggregatedExpressionModule

Canonical page: https://www.adaptabletools.com/docs/reference/adaptableaggregatedexpressionmodule

Modules that host **aggregated** AdapTableQL expressions for custom
`isAvailable` authoring: Alert Aggregated and Calculated Column Aggregated.

Layout Row Summary and Cell Summary are intentionally omitted — they use
fixed summary UIs (not the Expression Editor). System aggregations still
evaluate there via internal availability policy; Cell Summary customs use
 instead.

```ts title="TypeScript"
export type AdaptableAggregatedExpressionModule = 'Alert' | 'CalculatedColumn';
```