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Base Lightning Component Limitations

In LWR sites, you can use most of the components in the Lightning Component Library, but there are some limitations.
The lightning-input-field component (including when it’s used within another component):
  • Doesn’t support lookup search in LWR sites viewed on desktop computer
  • Is unsupported in LWR sites viewed on mobile devices
These components and events are unsupported:
  • lightning-emp-api
  • lightning-file-upload
  • lightningsnapin components
  • platform-show-toast-event
These features are unsupported:
  • Opening files, as described in Open Files in the Lightning Web Components Developer Guide
  • Displaying a toast notification, as described in Display Toast Notifications in the Lightning Web Components Developer Guide
  • Using panels or modals

See an example of lightning-messageService in codeSamples/messageService in the code sample files.

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