Add the configured optional sponsorship to a checkout
Requires the optional offer to resolve to an eligible public recipient sharing the anchor program donor form, plus a live checkout session. Validates amount and a frequency key from the resolved offer. Saves the recipient through normal amount policy checks and marks it in the original cart for later checkout scope. Unavailable offers and expired sessions return 422; no payment is charged here.
Path Parameters
Client id.
x >= 1207
Program id. Program route; order/cart methods may accept hyphen-separated program IDs.
"11"
Session id. Frontend or recipient session ID belonging to this organization.
"checkout-session-from-response"
Body
Request fields accepted by this operation. Omitted optional properties retain the behavior described above.