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# sectionIdentifier

The key path that the system uses to group fetched results into sections.

```
@MainActor @preconcurrency var sectionIdentifier: KeyPath<Result, SectionIdentifier> { get nonmutating set }
```

## Discussion

Set this value to cause the associated [`SectionedFetchRequest`](/documentation/SwiftUI/SectionedFetchRequest) to
execute a fetch with a new section identifier, producing an updated
collection of results. Changing this value produces a new set of
sections. Use care to coordinate section and sort updates, as described
in [`SectionedFetchRequest.Configuration`](/documentation/SwiftUI/SectionedFetchRequest/Configuration).

---

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