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The following issues may occur on an Xsan volume in directories that have an unresolved POSIX group ID (GID) and at least one access control entry: Attempting to copy a file via the Finder to the affected directory results in this alert: “The operation can’t be completed because one or more required items can’t be found. (Error code -43)” This alert may appear when creating a new folder via the Finder in the affected directory: ”The operation can’t be completed. An unexpected error occcurred (error code -43).” Command line utilities may stop responding when creating a file in the affected directory.