Using fragment on xml documents

[rohith004]

I am trying to parse http://exporter.nih.gov/XMLData/final/RePORTER_PRJABS_X_FY2016_024.zip which contains one xml file with "PROJECTS" as the root.
i want to index multiple documents from this xml file with /PROJECTS/row as the new root
and /PROJECTS/row/APPLICATION_ID as one of the field.
my extractor.xml file looks like this
<document url=".*RePORTER.*" engine="xpath"> <fragment root="/PROJECTS/row"> <extract-to field="url"> <text> <expr value="//APPLICATION_ID" /> </text> </extract-to> <extract-to field="appl_no"> <text> <expr value="//APPLICATION_ID" /> </text> </extract-to> <extract-to field="doc_ref"> <constant value="some constant" /> </extract-to> </fragment> </document>
This fails always trying to index leaving the logs
Parser

2016-03-17 21:49:43,545 INFO parse.ParseSegment - Parsed (5ms):9095546 9024405 ..and so on
2016-03-17 21:49:43,546 INFO parse.ParseSegment - Parsed (1ms):file:/home/ubuntu/nih/RePORTER_PRJ_X_FY2016_024.xml

Indexer

org.apache.solr.client.solrj.impl.HttpSolrClient$RemoteSolrException: Error from server at http://localhost:8983/solr/nih_core: ERROR: [doc=9095546 9024405..] multiple values encountered for non multiValued field doc_ref: [some constant, some constant...]