[AlphaCommerceHub] Where is the request and response parameters specification for the PayPal's `RefundPayment` transaction?

Extensions AlphaCommerceHub
, , ,
2

Sample RefundPayment, not in the version on developer centre. Will follow-up

SAMPLE REFUNDPAYMENT
REQUEST

<TransactionRequest>
    <Header>
        <UserID>USER123</UserID>
        <MerchantID>PayPalTest</MerchantID>
        <TransactionType>RefundPayment</TransactionType>
        <Version>2</Version>
    </Header>
    <Transaction>
        <MerchantTxnID>20170202002</MerchantTxnID>
        <Currency>USD</Currency>
        <Amount>30000</Amount>
        <Method>PP</Method>
    </Transaction>
</TransactionRequest>

RESPONSE

<TransactionResponse>
   <Result>
      <ResponseCode>1000</ResponseCode>
      <ResponseMessage>Request successful</ResponseMessage>
      <ResponseTimestamp>02022017101248</ResponseTimestamp>
      <MerchantID>PayPalTest</MerchantID>
      <MerchantTxnID>20170202002</MerchantTxnID>
      <Currency>USD</Currency>
      <Amount>30000</Amount>
   </Result>
   <ProviderResps>
      <ProviderResp>
         <ProviderName>Paypal</ProviderName>
         <ProviderOrder>1</ProviderOrder>
         <ProviderResponse>Success</ProviderResponse>
      </ProviderResp>
   </ProviderResps>
   <MethodResult/>
</TransactionResponse>