Upload a file from S3 to a Multi FileFeed import

post

https://api.oneschema.co/v0/multi-file-feeds/{multi_file_feed_id}/imports/{multi_file_feed_import_id}/upload-from-s3

Uploads a file from a customer's S3 bucket into a Multi FileFeed import. The server assumes an IAM role to read the specified S3 object, verifies it exists and is within the file size limit, downloads it, and stores it as an uploaded file on the import.

The object_uri must be a valid S3 URI in the format s3://bucket/key. The s3_account_id identifies which S3 account credentials (role ARN and external ID) to use for the STS AssumeRole call. The referenced bucket and object must be accessible to the IAM role configured on that S3 account.

Both the object URI and the file basename (derived from the S3 key) must be unique within the import. If either already exists, a 409 Conflict is returned.

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200Successful response. The file has been downloaded from S3 and stored on the import. The primary way to verify the request's success or failure is the response status code. In a future API version this endpoint may return additional metadata about the uploaded file.

400Bad request. Possible causes: invalid S3 URI format, S3 object not accessible (not found, forbidden, or access denied), object exceeds the file size limit, import already submitted, or import does not belong to the specified Multi FileFeed.

409Conflict. A file with the same object URI or the same filename (basename of the S3 key) has already been uploaded to this import.

500Internal server error. A platform-level failure occurred during the S3 upload flow (e.g. STS role assumption failed due to a misconfigured intermediate role, or an unexpected AWS service error). These errors indicate an infrastructure issue rather than a problem with the request parameters.