Actually i have library with multiple folders in that multiple files and also metadata. I need to copy all these files and folders to another library. I used "Copy" method and "Copy to sharepoint" but both are not working getting below error. i saw so many tutorials for the copying files from one library to another library but they used webservice. webservice is not working for me,its giving "unspecified error" every time. so their is any way without using webservice.can we archive this copying files from one library to another library.