multiple values encountered for non multiValued copy field

[Radha C.]

Hi,
 
I am having mutivalued field "all" in my schema.xml . But it is not
identified and got below error.
Can anyone help me with this..
 
<schema name="DIT" version="1.1">
  <types>
 <fieldType name="string" class="solr.StrField" sortMissingLast="true"
omitNorms="true"/>
   <fieldType name="text" class="solr.TextField"
positionIncrementGap="100"/>
   <fieldType name="integer" class="solr.IntField" omitNorms="true"/>   
  </types>
 
 <fields>
   <field name="person_id" type="integer" indexed="true" stored="true"
multivalued="false" required="true"/>
   <field name="fname" type="text" indexed="true" stored="true"
multivalued="false"/>
<field name="all" type="text" indexed="true" stored="true"
multivalued="true"/>
 </fields>
 <uniqueKey>person_id</uniqueKey>
 <defaultSearchField>all</defaultSearchField>
 <solrQueryParser defaultOperator="OR"/>
 <copyField source="person_id" dest="all"/>
 <copyField source="fname" dest="all"/> 
</schema>
 
INFO: Time taken for getConnection(): 360
Mar 23, 2009 1:51:25 PM org.apache.solr.handler.dataimport.SolrWriter upload
WARNING: Error creating document :
SolrInputDocument[{fname=fname(1.0)={Peter}, person_id=person_id(1.0)={1}}]
org.apache.solr.common.SolrException: ERROR: multiple values encountered for
non multiValued copy field all: 1
        at
org.apache.solr.update.DocumentBuilder.toDocument(DocumentBuilder.java:256)
        at
org.apache.solr.update.processor.RunUpdateProcessor.processAdd(RunUpdateProc
essorFactory.java:59)
        at
org.apache.solr.handler.dataimport.SolrWriter.upload(SolrWriter.java:67)
        at
org.apache.solr.handler.dataimport.DataImportHandler$1.upload(DataImportHand
ler.java:263)
        at
org.apache.solr.handler.dataimport.DocBuilder.buildDocument(DocBuilder.java:
377)
        at
org.apache.solr.handler.dataimport.DocBuilder.doFullDump(DocBuilder.java:225
)
        at
org.apache.solr.handler.dataimport.DocBuilder.execute(DocBuilder.java:167)
        at
org.apache.solr.handler.dataimport.DataImporter.doFullImport(DataImporter.ja
va:323)
        at
org.apache.solr.handler.dataimport.DataImporter.runCmd(DataImporter.java:381
)