Problem

--CFRN02E:RENAME error RC=08, RS=040B0426, DSN=
--CFRN03E:Old DSN was:aaa.bbb.ccc
--CFRNxxx messages are not documented

Resolution

--CFTRNxxx messages are related to the Rename operation when WFNAME is used
--self explained messages are usually platform specifics and not documented
--the text in the output message is assumed to be enough verbose so the message explains itself