Error code 43 appears with a message reading The operation can bepleted because one or more required items can be found. (Error code -43). It occurs when you attempt to delete some files to trash or move files from one folder to another folder. italic However the Error Code-43 does not occur every time but only when there some problem with one or more files you want to move on your Mac PC. There are 4 primary reasons why you could be seeing a 'Mac Error code 43' pop-up namely Ipatible file name characters - @ ! # % ^ and $ A shared file(s) problem (no shared point) According to the research -Error 43 on Mac has only been reported for the following operating systems X El Capitue1n and OS X 1.2. italic