There are four restrictions on the usage of the library functions C$COPY and RENAME when they are used with remote name notation.
RENAME does not support file copies or renames from client systems to file
servers, or vice versa. In other words, renames are not supported across machines.
For a rename, remote name notation is not allowed on the destination file
parameter.
When copies or renames are executed on a file server, the location of the
copied or renamed file is determined by the relative or absolute pathnames of the
parameter values.
FILE-PREFIX and name aliases are not used to find files named in the function parameters.
These restrictions are explained in detail in the following sections.