The obvious first thought is "the hardware name is not DR" on the system where the definition is not working.
Look at ECVTHDNM and see what it says (among many choices, you could write a tiny program, use REXX, use TSO TEST, use IPCS ACTIVE, use IPCS upon an SVC Dump) Peter Relson z/OS Core Technology Design ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
