Upload a raw CSV file
Persist a raw CSV through the shared attachment layer for audit / re-ingest. Ingestion of the parsed rows happens separately via the v1 batch endpoints — this only lands the file.
Authentication: Bearer token required.
Authentication
Bearer authentication of the form Bearer <token>, where token is your auth token.
Headers
Request
Browser-generated CSV import correlation ID
Response
Which entity a CSV upload is for — echoed in the response and the correlated logs.

