调用eBay VerifyAddFixedPriceItem接口时XML请求多次报错的修正咨询

看起来你遇到了两个典型的XML格式与接口参数规范问题，咱们一步步拆解解决：

1. 解决错误Code 20170（Schema XML反序列化错误） #

这个错误的核心原因是XML命名空间存在非法字符，导致eBay的Schema解析器无法正确识别你的请求结构。

你当前XML根元素的命名空间里有个多余的*号：

xmlns="urn:eb*y:apis:eBLBaseComponents"

必须把eb*y改成ebay，修正后的合法命名空间为：

xmlns="urn:ebay:apis:eBLBaseComponents"

这个非法字符会直接让解析器无法匹配官方Schema，进而抛出"SimpleDeserializer encountered a child element"这类反序列化异常。

2. 解决错误Code 37（PictureURL格式无效） #

eBay的PictureURL字段强制要求完整的HTTP/HTTPS协议前缀，你去掉http://的操作刚好违反了参数规范。

正确的写法必须保留协议头，比如你最初的URL格式就是合规的：

<PictureURL>http://www.mensworld.com.bd/wp-content/uploads/2023/09/FSF-1166.jpg</PictureURL>

如果该图片支持HTTPS，换成https://会更稳妥，但核心是必须包含完整的协议前缀，同时要确保这个URL是公开可访问的（eBay会验证图片的可访问性）。

修正后的完整XML示例 #

<?xml version='1.0' encoding='utf-8'?>
<VerifyAddFixedPriceItemRequest xmlns="urn:ebay:apis:eBLBaseComponents">
  <RequesterCredentials>
    <eBayAuthToken>v^1.1#i^1#r^1#I^3#p^3#f^0#t^Ul4xMF84Ojg0NUNBQzJCAAAAAABBBBBBBBBBBCCCCCFAKE=</eBayAuthToken>
  </RequesterCredentials>
  <Item>
    <ConditionID>1500</ConditionID>
    <Country>US</Country>
    <Currency>USD</Currency>
    <Description>Genuine leather jacket in excellent condition</Description>
    <DispatchTimeMax>3</DispatchTimeMax>
    <ItemSpecifics>
      <NameValueList>
        <Name>Brand</Name>
        <Value>Custom</Value>
      </NameValueList>
      <NameValueList>
        <Name>Size (Men's)</Name>
        <Value>L</Value>
      </NameValueList>
      <NameValueList>
        <Name>Color</Name>
        <Value>Yellow</Value>
      </NameValueList>
      <NameValueList>
        <Name>Style</Name>
        <Value>Basic Coat</Value>
      </NameValueList>
      <NameValueList>
        <Name>Type</Name>
        <Value>Leather Jacket</Value>
      </NameValueList>
      <NameValueList>
        <Name>Material</Name>
        <Value>Leather</Value>
      </NameValueList>
      <NameValueList>
        <Name>Pattern</Name>
        <Value>Solid</Value>
      </NameValueList>
      <NameValueList>
        <Name>Department</Name>
        <Value>Men</Value>
      </NameValueList>
    </ItemSpecifics>
    <ListingDuration>Days_7</ListingDuration>
    <ListingType>FixedPriceItem</ListingType>
    <Location>San Jose, CA</Location>
    <PictureDetails>
      <PictureURL>http://www.mensworld.com.bd/wp-content/uploads/2023/09/FSF-1166.jpg</PictureURL>
    </PictureDetails>
    <PostalCode>95125</PostalCode>
    <PrimaryCategory>
      <CategoryID>57988</CategoryID>
    </PrimaryCategory>
    <Quantity>1</Quantity>
    <ReturnPolicy>
      <RefundOption>MoneyBack</RefundOption>
      <ReturnsAcceptedOption>ReturnsAccepted</ReturnsAcceptedOption>
      <ReturnsWithinOption>Days_30</ReturnsWithinOption>
      <ShippingCostPaidByOption>Buyer</ShippingCostPaidByOption>
    </ReturnPolicy>
    <ShippingDetails>
      <ShippingServiceOptions>
        <ShippingService>USPSPriority</ShippingService>
        <ShippingServiceCost>
          <currencyID>USD</currencyID>
          <value>0.00</value>
        </ShippingServiceCost>
        <ShippingServicePriority>1</ShippingServicePriority>
      </ShippingServiceOptions>
      <ShippingType>Flat</ShippingType>
    </ShippingDetails>
    <Site>US</Site>
    <StartPrice>
      <currencyID>USD</currencyID>
      <value>99.00</value>
    </StartPrice>
    <Title>Yellow Leather Jacket</Title>
  </Item>
</VerifyAddFixedPriceItemRequest>

备注：内容来源于stack exchange，提问作者Fredy