开发者专区

在使用PayPal付款的交易中，GetSellerTransactions 或 GetItemTransactions会返回‌相应的ExternalTransactionID字段。有时，卖家在 APi 的 Response 中看到一笔 eBay 交易会出现多个ExternalTransactionID，然而当他们登陆 PayPal Account 时，却只看见一个PayPal Transaction ID。

在API的Response中出现多个ExternalTransactionID 属于正常现象，产生的原因通常是因为买家多次尝试对一笔交易付款。

Example:

<ExternalTransaction>
        <ExternalTransactionID>81230990PK390312Y</ExternalTransactionID>
        <ExternalTransactionTime>2009-03-08T11:53:13.000Z</ExternalTransactionTime>
        <FeeOrCreditAmount currencyID="EUR">0.0</FeeOrCreditAmount>
        <PaymentOrRefundAmount currencyID="EUR">5.0</PaymentOrRefundAmount>
      </ExternalTransaction>
      <ExternalTransaction>
        <ExternalTransactionID>4RF568T900200565F</ExternalTransactionID>
        <ExternalTransactionTime>2009-03-08T11:47:45.000Z</ExternalTransactionTime>
        <FeeOrCreditAmount currencyID="EUR">0.0</FeeOrCreditAmount>
        <PaymentOrRefundAmount currencyID="EUR">5.0</PaymentOrRefundAmount>
      </ExternalTransaction>
      <ExternalTransaction>
        <ExternalTransactionID>7UF13825HG7887941</ExternalTransactionID>
        <ExternalTransactionTime>2009-03-14T07:27:57.000Z</ExternalTransactionTime>
        <FeeOrCreditAmount currencyID="EUR">0.0</FeeOrCreditAmount>
        <PaymentOrRefundAmount currencyID="EUR">5.0</PaymentOrRefundAmount>
  </ExternalTransaction>

典型的导致多次为一笔交易尝试付款的原因：

1. 卖家否认买家付款，买家的付款状况为失败
2. 买家发起付款，但随后却取消付款

注意:  只有成功的付款才能在卖家的 PayPal 账户中被显示