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

 Message        <Context> conversion of the constant "<constant>" to
                <type> type will cause data loss.

 Description    A constant is converted to a type that is too small
                to hold the constant value.  Data will be lost in the
                conversion.

 User Action    If this is what you intended, cast the constant to
                the desired type.  You might also want to mask off
                the high-order bits before casting in order to avoid
                optional message intconcasttru, which reports data
                loss caused by casts.