VMS Help CC, Messages, NORETURNVAL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        The function "<name>" returns a value, but no value
                is given in this return statement.

 Description    A function that returns a value contains a return
                statement that is missing a return value.  Therefore,
                the returned value will be undefined.  This might not
                have been what you intended.

 User Action    Supply a return value for the return statement.