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

 Message        The identifier name exceeds <number> characters; name
                passed to the debugger will be truncated to
                "<truncated spelling>".

 Description    On some platforms, the name length supported by the
                compiler is greater than the length supported by the
                debugger.  In this case the compiler must truncate
                the name when it is output to the debugger symbol
                table for this compilation.

 User Action    Reduce the size of the name.