what do you mean by combine two fields customerID and ProductId. what i tried is 1. make both fields unique but it doesnot server my purpose 2. make a new field ID and copy both customerID , ProductId into ID using CopyField and now make ID as uniqueKey but i got a error saying: Document specifies multiple unique ids
----- Romi -- View this message in context: http://lucene.472066.n3.nabble.com/UniqueKey-field-in-schema-xml-tp2987807p2988168.html Sent from the Solr - User mailing list archive at Nabble.com.