notion.sendFileUpload send file bytes or one numbered part to a pending upload.
Example
automations/notion-send-file-upload.automation.ts
Inputs
file_upload_id and file are required. Filenames are limited to 900 bytes. When the create step records or infers a content type, use a Blob with the same media type for the file data. Provide part_number as a string from 1 through 10000 for multipart uploads. OAuth requires no additional content capability; personal access tokens use their normal API access. Every input accepts a compatible signal, and an optional second argument can select a named account.
Output
Returns the updatedfile_upload object.
This request uses multipart/form-data; do not base64-wrap ordinary text or Blob input unless the file format itself requires it.