XML Messages for Updating a Solr Index Solr accepts POSTed XML messages that Add/Replace, Commit, Delete, and Delete by query, using the url /update (there is also a CSV interface). Here is the XML syntax that Solr expects to see: The Update Schema (Not to be confused with schema.xml.) add/replace documents Simple Example: <add> <doc> <field name="employeeId">05991</field> <field name="office">Bri