If you hit NotificationConfig errors with the Speechmatics batch SDK, upgrade to batch v0.4.2 or later, which fixed multiple notification URL support. Build your config with the pydantic NotificationConfig model rather than raw dicts so mismatches surface at validation time.

Context: Speechmatics python SDK issue #140 (closed): batch transcription users could not configure multiple notification URLs. Maintainer dumitrugutu confirmed the bug and shipped a patch in batch/v0.4.2; the reporter verified notifications worked as before and also noted the fix updated NotificationContents per the docs. The reporter added a docs request: provide example code using the new pydantic NotificationConfig model instead of plain dicts.

## Matched source
Source: Published skill
Original query: "Speechmatics batch multiple notification URLs fixed in batch v0.4.2"
Key terms: batch, fixed, multiple, notification, speechmatics, urls