尝试使用 API 添加新的 Google 共享联系人时，我不断收到 HTTP 409“冲突”错误。
我尽可能地遵循了文档，并将新条目定义为：
<atom:entry xmlns:atom='http://www.w3.org/2005/Atom' xmlns:gd='http://schemas.google.com/g/2005'>
<atom:category scheme='http://schemas.google.com/g/2005#kind' term='http://schemas.google.com/contact/2008#contact' />
<gd:name>
<gd:givenName>Test</gd:givenName>
<gd:familyName>Testerson</gd:familyName>
<gd:fullName>Test Testerson</gd:fullName>
</gd:name>
<atom:content type='text'></atom:content>
<gd:email rel='http://schemas.google.com/g/2005#work' primary='true' address='test.testerson@sample.com.au' displayName='' />
<gd:email rel='http://schemas.google.com/g/2005#home' address='' />
<gd:phoneNumber rel='http://schemas.google.com/g/2005#work' primary='true'>(07) 33331111</gd:phoneNumber>
<gd:phoneNumber rel='http://schemas.google.com/g/2005#mobile'>0411223344</gd:phoneNumber>
<gd:phoneNumber rel='http://schemas.google.com/g/2005#fax'>(07) 33331122</gd:phoneNumber>
<gd:phoneNumber rel='http://schemas.google.com/g/2005#home'></gd:phoneNumber>
<gd:im address='' protocol='http://schemas.google.com/g/2005#GOOGLE_TALK' primary='true' rel='http://schemas.google.com/g/2005#home' />
<gd:structuredPostalAddress rel='http://schemas.google.com/g/2005#work' primary='true'>
<gd:city>Abbey</gd:city>
<gd:street>PO Box 4561</gd:street>
<gd:region>WA</gd:region>
<gd:postcode>6280</gd:postcode>
<gd:country>Australia</gd:country>
<gd:formattedAddress>PO Box 4561, Abbey, WA, 6280, Australia</gd:formattedAddress>
</gd:structuredPostalAddress>
<gd:structuredPostalAddress rel='http://schemas.google.com/g/2005#other'>
<gd:city>Abbey</gd:city>
<gd:street>47 Example Avenue</gd:street>
<gd:region>WA</gd:region>
<gd:postcode>6280</gd:postcode>
<gd:country>Australia</gd:country>
<gd:formattedAddress>47 Example Avenue, Abbey, WA, 6280, Australia</gd:formattedAddress>
</gd:structuredPostalAddress>
<gd:organization rel='http://schemas.google.com/g/2005#other'>
<gd:orgTitle>Guinea Pig</gd:orgTitle>
<gd:orgName>Test Org</gd:orgName>
</gd:organization>
</atom:entry>
我已经按如下方式设置了我的 HTTP 请求：
lsToken = GetAuthToken()
Set lobjHttp = CreateObject("MSXML2.XMLHTTP")
Call lobjHttp.Open("POST", CS_FEED_DEFAULT, False, "", "")
Call lobjHttp.setRequestHeader("Authorization", "GoogleLogin auth=" + lsToken)
Call lobjHttp.setRequestHeader("Content-type", "application/atom+xml")
Call lobjHttp.Send(lsOut)
在此示例中，CS_FEED_DEFAULT 是共享联系人 URL，lsOut 是我上面定义的条目。
发送此请求后，我收到 409 响应和以下响应文本：
<?xml version='1.0' encoding='UTF-8'?>
<entry xmlns='http://www.w3.org/2005/Atom' xmlns:gContact='http://schemas.google.com/contact/2008' xmlns:batch='http://schemas.google.com/gdata/batch' xmlns:gd='http://schemas.google.com/g/2005'>
<id>http://www.google.com/m8/feeds/contacts/test.com.au/base/47e904e10dd27dd2</id>
<updated>2014-09-17T02:08:39.761Z</updated>
<category scheme='http://schemas.google.com/g/2005#kind' term='http://schemas.google.com/contact/2008#contact'/>
<title type='text'></title>
<content type='text'></content>
<link rel='http://schemas.google.com/contacts/2008/rel#edit-photo' type='image/*' href='https://www.google.com/m8/feeds/photos/media/test.com.au/47e904e10dd27dd2/1B2M2Y8AsgTpgAmY7PhCfg'/>
<link rel='self' type='application/atom+xml' href='https://www.google.com/m8/feeds/contacts/test.com.au/full/47e904e10dd27dd2'/>
<link rel='edit' type='application/atom+xml' href='https://www.google.com/m8/feeds/contacts/test.com.au/full/47e904e10dd27dd2/1410919719761001'/>
<gd:email rel='http://schemas.google.com/g/2005#work' address='test.testerson@sample.com.au' primary='true'/>
<gd:phoneNumber rel='http://schemas.google.com/g/2005#work' primary='true'>(07) 33331111</gd:phoneNumber>
<gd:phoneNumber rel='http://schemas.google.com/g/2005#mobile'>0411223344</gd:phoneNumber>
<gd:phoneNumber rel='http://schemas.google.com/g/2005#work_fax'>(07) 33331122</gd:phoneNumber>
</entry>
任何人都可以就这个问题给我任何建议吗？
谢谢。