Update
The Update action updates the metadata of documents in a repository.
Documents are specified by their identifier.          
/action=fetch&fetchaction=Update [&config=<Base64_Config>] &identifiersXML=<Identifiers_XML> [&<Override_Config_Parameters>]
Type: Asynchronous
| Parameter Name | Description | Required | 
|---|---|---|
| Config | A base-64 encoded configuration. The configuration parameters that are set override the same parameters in the connector's configuration file. | No | 
| IdentifiersXML | The  The parameter value must be provided in XML format as below: <IdentifiersXML>
  <identifier value="AUTN_IDENTIFIER1">
    <metadata name="CustomField" value="Value1"/>
    <metadata name="CustomField" value="Value2"/>
    <!-- ... -->
  </identifier>
  <identifier value="AUTN_IDENTIFIER2">
    <xmlmetadata>
      <CustomField>Value1</CustomField>
      <CustomField>Value2</CustomField>
      <AnotherField>
        <SubField>Value</SubField>
      </AnotherField>
    </xmlmetadata>
  </identifier>
  <!-- ... -->
</IdentifiersXML> | Yes | 
| Override_Config_Parameters | Any other action parameters that you set override settings in the connector's configuration file. For example: /action=fetch&fetchaction=... where  | No | 
Response
As this is an asynchronous action, you receive a token in response to the request. A sample response to the action (as retrieved using the QueueInfo action) appears below.
<fetchaction>UPDATE</fetchaction> <tasks> <success>[IDENTIFIER1]</success> <success>[IDENTIFIER2]</success> <failed message="Error message">[IDENTIFIER3]</failed> </tasks>