Knowledge store item metadata request field deprecated, use item_metadata

The metadata field of the request to create a knowledge store item is deprecated. Use item_metadata instead. The old name still works: the item stores the pairs you send as metadata in its item_metadata field. If your code reads metadata from the item, read item_metadata instead.

For details, see the Create a knowledge store item page in the API Reference section, or the SDK reference for Python and Node.js.