Optional recommendation to allow partial authorization whenever possible. At least one of amount or percentage must be provided. If both are provided, the approved amount is calculated as the specified percentage of the payment amount, but must not be less than amount. Sending this object does not guarantee a partial approval will occur. Actual support depends on payment methods that support partial approvals

Use to store additional information associated with the payment. You can add parameters udf1 and udf2 to pass your internal values such as transactionId, chargeId, orderId, bundleId, or affiliateId. Any values passed will be available in the Merchant Portal