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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. The connection stays live. The member’s OAuth consent, access token and refresh token are untouched, so you keep reading their profile, sea time and vessels, and keep receiving their webhooks. Vessel tracking keeps running.
The seat ends in the cancelled status and no longer counts toward your program’s seat usage.
Ending a seat is a billing change, not an access change. This is what makes a free tier work: a member who drops from your paid plan to your free one stops costing you a seat but stays connected, so their sea service still appears in your product. The member ends the connection themselves by disconnecting, and you can end it with member-left + account_deleted.
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 that does end the connection.

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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