Thanks for information. Here is the full stack trace. I thought to handle it from client side but client apps are not under my control and I don't have access to them.
org.apache.solr.common.SolrException: Illegal character ((CTRL-CHAR, code 11)) at [row,col {unknown-source}]: [1,413] at org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:179) at org.apache.solr.handler.UpdateRequestHandler$1.load(UpdateRequestHandler.java:97) at org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:68) at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:153) at org.apache.solr.core.SolrCore.execute(SolrCore.java:2213) at org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:654) at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:460) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:303) at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:254) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1160) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1092) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:213) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134) at org.eclipse.jetty.server.Server.handle(Server.java:518) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244) at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273) at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95) at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:246) at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:156) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572) at java.lang.Thread.run(Thread.java:748) Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException: Illegal character ((CTRL-CHAR, code 11)) at [row,col {unknown-source}]: [1,413] at com.ctc.wstx.sr.StreamScanner.throwInvalidSpace(StreamScanner.java:674) at com.ctc.wstx.sr.BasicStreamReader.readTextPrimary(BasicStreamReader.java:4576) at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(BasicStreamReader.java:2881) at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1073) at org.apache.solr.handler.loader.XMLLoader.readDoc(XMLLoader.java:397) at org.apache.solr.handler.loader.XMLLoader.processUpdate(XMLLoader.java:249) at org.apache.solr.handler.loader.XMLLoader.load(XMLLoader.java:177) ... 32 more -- Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html