Sometime I get the status code 400 for reverse geocode result.

But I am sure that there should be a address associated with the
coordinate specified:


The Geo Code I used come from: 
http://maps.google.com/maps/geo?q=hin%20pui%20hourse&output=xml&key=my
own key
<?xml version="1.0" encoding="UTF-8" ?>
<kml xmlns="http://earth.google.com/kml/2.0";><Response>
  <name>hin pui hourse</name>
  <Status>
    <code>200</code>
    <request>geocode</request>
  </Status>
  <Placemark id="p1">

    <address>Hin Keng Estate Hin Pui House, Hong Kong</address>
    <AddressDetails Accuracy="9"
xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:
2.0"><Country><CountryNameCode>HK</CountryNameCode><CountryName>Hong
Kong</CountryName><AddressLine>Hin Keng Estate Hin Pui House</
AddressLine></Country></AddressDetails>
    <Point><coordinates>114.1747291,22.3654188,0</coordinates></Point>
  </Placemark>
  <Placemark id="p2">
    <address>Hin Keng Estate Hin Pui House, 69 Che Kung Miu Rd, Hong
Kong</address>

    <AddressDetails Accuracy="9"
xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:
2.0"><Country><CountryNameCode>HK</CountryNameCode><CountryName>Hong
Kong</CountryName><Thoroughfare><ThoroughfareName>69 Che Kung Miu Rd</
ThoroughfareName></Thoroughfare><AddressLine>Hin Keng Estate Hin Pui
House</AddressLine></Country></AddressDetails>
    <Point><coordinates>114.1747320,22.3654130,0</coordinates></Point>
  </Placemark>
</Response></kml>


The first coordinate:
http://maps.google.com/maps/geo?ll=114.1747291%2C22.3654188&output=xml&key=my
own key

The second coordinate:
http://maps.google.com/maps/geo?ll=114.1747320%2C22.3654130&output=xml&key=my
own key

The above two both get:
<?xml version="1.0" encoding="UTF-8" ?>
<kml xmlns="http://earth.google.com/kml/2.0";><Response>
  <name></name>
  <Status>
    <code>400</code>
    <request>geocode</request>
  </Status>
</Response></kml>


Working coordiante:
http://maps.google.com/maps/geo?ll=22.365465,114.174546&output=xml&key=my
own key
<?xml version="1.0" encoding="UTF-8" ?>
<kml xmlns="http://earth.google.com/kml/2.0";><Response>
  <name>22.365465,114.174546</name>
  <Status>
    <code>200</code>
    <request>geocode</request>
  </Status>
  <Placemark id="p1">

    <address>Hin Keng St, New Territories, Hong Kong</address>
    <AddressDetails Accuracy="6"
xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:
2.0"><Country><CountryNameCode>HK</CountryNameCode><CountryName>Hong
Kong</CountryName><AdministrativeArea><AdministrativeAreaName>Hong
Kong</
AdministrativeAreaName><SubAdministrativeArea><SubAdministrativeAreaName>Hong
Kong</SubAdministrativeAreaName><Locality><LocalityName>New
Territories</
LocalityName><DependentLocality><DependentLocalityName>Sha Tin</
DependentLocalityName><Thoroughfare><ThoroughfareName>Hin Keng St</
ThoroughfareName></Thoroughfare></DependentLocality></Locality></
SubAdministrativeArea></AdministrativeArea></Country></AddressDetails>
    <Point><coordinates>114.1752125,22.3653435,0</coordinates></Point>
  </Placemark>

  <Placemark id="p2">
    <address>Sha Tin, Hong Kong</address>
    <AddressDetails Accuracy="4"
xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:
2.0"><Country><CountryNameCode>HK</CountryNameCode><CountryName>Hong
Kong</CountryName><DependentLocality><DependentLocalityName>Sha Tin</
DependentLocalityName></DependentLocality></Country></AddressDetails>
    <Point><coordinates>114.1855505,22.3790108,0</coordinates></Point>
  </Placemark>
  <Placemark id="p3">

    <address>Sha Tin District, Hong Kong</address>
    <AddressDetails Accuracy="4"
xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:
2.0"><Country><CountryNameCode>HK</CountryNameCode><CountryName>Hong
Kong</CountryName><AdministrativeArea><AdministrativeAreaName>Hong
Kong</
AdministrativeAreaName><SubAdministrativeArea><SubAdministrativeAreaName>Hong
Kong</SubAdministrativeAreaName><Locality><LocalityName>Sha Tin
District</LocalityName></Locality></SubAdministrativeArea></
AdministrativeArea></Country></AddressDetails>
    <Point><coordinates>114.1953448,22.3871528,0</coordinates></Point>
  </Placemark>
  <Placemark id="p4">

    <address>New Territories, Hong Kong</address>
    <AddressDetails Accuracy="4"
xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:
2.0"><Country><CountryNameCode>HK</CountryNameCode><CountryName>Hong
Kong</CountryName><AdministrativeArea><AdministrativeAreaName>Hong
Kong</
AdministrativeAreaName><SubAdministrativeArea><SubAdministrativeAreaName>Hong
Kong</SubAdministrativeAreaName><Locality><LocalityName>New
Territories</LocalityName></Locality></SubAdministrativeArea></
AdministrativeArea></Country></AddressDetails>
    <Point><coordinates>114.2111189,22.4721614,0</coordinates></Point>
  </Placemark>
  <Placemark id="p5">

    <address>Hong Kong, Hong Kong</address>
    <AddressDetails Accuracy="2"
xmlns="urn:oasis:names:tc:ciq:xsdschema:xAL:
2.0"><Country><CountryNameCode>HK</CountryNameCode><CountryName>Hong
Kong</CountryName><AdministrativeArea><AdministrativeAreaName>Hong
Kong</AdministrativeAreaName></AdministrativeArea></Country></
AddressDetails>
    <Point><coordinates>114.2390498,22.3203365,0</coordinates></Point>
  </Placemark>
</Response></kml>

Does anyone know what wrong?

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