Use this endpoint to manually retry the most recent failed payment of a subscription. This is useful when a customer updates their payment method or resolves a payment issue (e.g., insufficient funds, expired card) mid-billing cycle, since subscription updates only take effect starting from the next billing cycle. Calling this endpoint forces a new charge attempt for the current cycle using the latest subscription configuration.

• Only the most recent payment of the subscription can be retried.
• Multiple manual retries can be executed only if the previous retry attempt resulted in a DECLINED status.
• Manually triggering a retry stops the smart retry scheme for the corresponding payment. The following payments of the subscription will follow the smart retry scheme if enabled in the creation.
• After the successful retry attempt, the system continues with the next scheduled subscription charge.
• If neither condition is met, an INVALID_REQUEST error is returned.