Import carrier-preference CSV rows
CSV-specific preference import. Resolves an existing carrier by MC/DOT and writes lane preferences without creating or updating carrier or contact data.
Authentication: Supports API key and bearer token authentication.
Authentication
Bearer authentication of the form Bearer <token>, where token is your auth token.
Headers
Browser-generated UUID correlating every chunk of one CSV import attempt
1-based position of this chunk within the import
A unique key (up to 255 printable ASCII characters, e.g. a UUID) that makes a retry of this request safe. Envoy stores the response for 24 hours; a retry with the same key and the same request returns it again with Idempotent-Replayed: true instead of running twice. The same key with a different request returns 422 idempotency_key_reused; while the first request is still running, 409 idempotency_key_in_progress. 5xx and 429 responses are not stored.
Request
Carrier preference CSV rows (max 1000)

