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Restricted — requires a sponsorship program. See the Sponsorship API overview for access and auth.
Removes a seat you no longer want to sponsor. Three things happen:
  1. The member is downgraded to Free immediately. Their sponsored Premium entitlement ends as soon as the removal succeeds.
  2. You receive a prorated credit for the unused remainder of that seat’s billing period — the seat leaves your recurring subscription.
  3. Vessel tracking is paused for the member’s vessel, on a best-effort basis. If another active crew member still keeps that vessel tracked, it stays on.
The seat ends in the cancelled status and no longer counts toward your program’s seat usage.
Removal is a downgrade, not a deletion of history. The member keeps their account and their own data; they simply return to the Free tier. If you’re removing a member for data-erasure reasons, contact DSS — GDPR erasure is a separate, stronger operation.

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Response

200 OK.

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Scoping

The seat is resolved under your partner before any teardown runs. A sponsorship_id that belongs to a different partner resolves to not_found (404) — you can’t remove another partner’s seat, and we don’t confirm it exists.

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Errors