=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/DefaultMetadataExportService.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/DefaultMetadataExportService.java	2016-02-03 07:40:27 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/DefaultMetadataExportService.java	2016-02-04 04:08:38 +0000
@@ -135,7 +135,7 @@
     }
 
     @Override
-    public void validate( MetadataExportParams params ) throws MetadataExportException
+    public void validate( MetadataExportParams params )
     {
 
     }

=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/DefaultMetadataImportService.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/DefaultMetadataImportService.java	2016-02-04 04:06:33 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/DefaultMetadataImportService.java	2016-02-04 04:08:38 +0000
@@ -77,7 +77,7 @@
     }
 
     @Override
-    public void validate( MetadataImportParams params ) throws MetadataImportException
+    public void validate( MetadataImportParams params )
     {
 
     }

=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/MetadataExportService.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/MetadataExportService.java	2016-02-03 06:57:11 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/MetadataExportService.java	2016-02-04 04:08:38 +0000
@@ -43,7 +43,7 @@
 
     RootNode getMetadataAsNode( MetadataExportParams params );
 
-    void validate( MetadataExportParams params ) throws MetadataExportException;
+    void validate( MetadataExportParams params );
 
     MetadataExportParams getParamsFromMap( Map<String, List<String>> parameters );
 }

=== modified file 'dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/MetadataImportService.java'
--- dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/MetadataImportService.java	2016-02-04 04:06:33 +0000
+++ dhis-2/dhis-services/dhis-service-dxf2/src/main/java/org/hisp/dhis/dxf2/metadata2/MetadataImportService.java	2016-02-04 04:08:38 +0000
@@ -38,7 +38,7 @@
 {
     void importMetadata( MetadataImportParams params );
 
-    void validate( MetadataImportParams params ) throws MetadataImportException;
+    void validate( MetadataImportParams params );
 
     MetadataImportParams getParamsFromMap( Map<String, List<String>> parameters );
 }

=== modified file 'dhis-2/dhis-web/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/CrudControllerAdvice.java'
--- dhis-2/dhis-web/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/CrudControllerAdvice.java	2016-01-26 04:34:57 +0000
+++ dhis-2/dhis-web/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/CrudControllerAdvice.java	2016-02-04 04:08:38 +0000
@@ -35,6 +35,8 @@
 import org.hisp.dhis.common.exception.InvalidIdentifierReferenceException;
 import org.hisp.dhis.dataapproval.exceptions.DataApprovalException;
 import org.hisp.dhis.dxf2.common.Status;
+import org.hisp.dhis.dxf2.metadata2.MetadataExportException;
+import org.hisp.dhis.dxf2.metadata2.MetadataImportException;
 import org.hisp.dhis.dxf2.webmessage.WebMessageException;
 import org.hisp.dhis.query.QueryException;
 import org.hisp.dhis.query.QueryParserException;
@@ -151,4 +153,10 @@
     {
         webMessageService.send( WebMessageUtils.createWebMessage( ex.getMessage(), Status.ERROR, ex.getStatusCode() ), response, request );
     }
+
+    @ExceptionHandler( { MetadataImportException.class, MetadataExportException.class } )
+    public void metadataImportExportHandler( Exception ex, HttpServletResponse response, HttpServletRequest request )
+    {
+        webMessageService.send( WebMessageUtils.conflict( ex.getMessage() ), response, request );
+    }
 }