Based on USAEpay docs, it's possible to set ignore_duplicate. Something related to UMignoreDuplicate.
Can someone please advice on how to use it? Or set it? I already tried below command and seems not to be working...
> gateway= ActiveMerchant::Billing::UsaEpayTransactionGateway.new(_credentials)
> options[:ignore_duplicate] = true
> gateway.purchase(order_amount, credit_card, options)
