請問一下關於電子發票的CheckMacValue

1334444

以測試帳號為例
<input type="hidden" name="ItemAmount" value="1630">
<input type="hidden" name="ItemCount" value="1">
<input type="hidden" name="ItemName" value="%E6%A9%9F%E5%A0%B4%E6%8E%A5%E9%80%81%E9%A0%90%E7%B4%84">
<input type="hidden" name="ItemPrice" value="1630">
<input type="hidden" name="ItemWord" value="%E5%80%8B">
<input type="hidden" name="MerchantID" value="2000132">
<input type="hidden" name="SalesAmount" value="1630">
<input type="hidden" name="TaxType" value="1">
<input type="hidden" name="TimeStamp" value="1489502297">
<input type="hidden" name="RelateNumber" value="Y17020001" >
<input type="hidden" name="CheckMacValue" value="D3D5C3C54C61AC2037F38F75AB73BC63">


CheckMacValue是由
HashKey=ejCk326UnaZWKisg&ItemAmount=1630&ItemCount=1&ItemPrice=1630&MerchantID=2000132&SalesAmount=1630&TaxType=1&TimeStamp=1489502297&RelateNumber=Y17020001&HashIV=q9jcZX8Ib9LM8wYk
下去編的

但收到的回覆是
InvoiceDate=&InvoiceNumber=&RandomNumber=&RtnCode=10200073&RtnMsg=CheckMacValue Error.&CheckMacValue=5DF87F5DA8774A31EDF2595A1E412A5B

請問是哪兒出錯了呢？

1334444

您好，我加入了客戶電子信箱，但得到的值仍是CheckMacValue Error.

傳送的值如下
<input type="hidden" name="CustomerEmail" value="marie%40j-gms.com" >
<input type="hidden" name="ItemAmount" value="1600">
<input type="hidden" name="ItemCount" value="1">
<input type="hidden" name="ItemName" value="%E6%BA%AB%E9%A6%A8%E6%8E%A5%E9%80%81">
<input type="hidden" name="ItemPrice" value="1600">
<input type="hidden" name="ItemWord" value="%E5%80%8B">
<input type="hidden" name="MerchantID" value="2000132">
<input type="hidden" name="SalesAmount" value="1600">
<input type="hidden" name="TaxType" value="1">
<input type="hidden" name="TimeStamp" value="1489580744">
<input type="hidden" name="RelateNumber" value="Y17030002" >
<input type="hidden" name="CheckMacValue" value="A1C7BFF60AD949C66CE400D0A4C3881B">

CheckMacValue是由這串下去編的
HashKey=ejCk326UnaZWKisg&CustomerEmail=marie%40j-gms.com&ItemAmount=1600&ItemCount=1&ItemPrice=1600&MerchantID=2000132&SalesAmount=1600&TaxType=1&TimeStamp=1489580744&RelateNumber=Y17030002&HashIV=q9jcZX8Ib9LM8wYk