diff -r 4740b34b83ce -r f56ec6ce2732 mmappcomponents/mmmtpdataprovider/mmmtpdprequestprocessor/src/csetobjectproplist.cpp
--- a/mmappcomponents/mmmtpdataprovider/mmmtpdprequestprocessor/src/csetobjectproplist.cpp	Tue Apr 27 17:09:22 2010 +0300
+++ b/mmappcomponents/mmmtpdataprovider/mmmtpdprequestprocessor/src/csetobjectproplist.cpp	Tue May 11 16:40:32 2010 +0300
@@ -245,6 +245,10 @@
                         object->SetDesCL( CMTPObjectMetaData::ESuid, newSuid );
                         iFramework.ObjectMgr().ModifyObjectL( *object );
                         }
+                    else if ( KErrInUse == err ) // object file is being used by other program
+                        {
+                        responseCode = EMTPRespCodeDeviceBusy;
+                        }
                     else
                         {
                         responseCode = EMTPRespCodeGeneralError;