# saveOneOffBy Endpoint: PUT /memberships/cp/api/subscription-contract-one-offs-by-contractId-and-billing-attempt-id Version: 0.0.1 ## Query parameters: - `shop` (string, required) - `contractId` (integer, required) - `billingAttemptId` (integer, required) - `variantId` (integer, required) - `variantHandle` (string, required) ## Response 200 fields (*/*): - `id` (integer) - `shop` (string, required) - `billingAttemptId` (integer) - `subscriptionContractId` (integer) - `variantId` (integer) - `variantHandle` (string)