DFHnn-Prefix Messages (CICS Transaction Server for z/VSE)

While CICS® is running, it can produce several types of messages:
  • Console messages advise the system operator of execution progress, or request a decision.
  • Certain CICS-supplied support programs communicate directly with terminal operators.
  • CICS management modules and support programs log significant events and error occurrences to transient data destinations, for example, to the control system master terminal (CSMT).
  • The CICS message switching program (DFHMSP) generates message switching responses (described in CICS Supplied Transactions manual).
  • CICS directs informational macro notes (mnotes) to programmers (these are not documented).
  • Messages produced by CICS utility programs such as DFH$MOLS and DFHMNDUP. These messages are self-explanatory and are not documented.