HELPLIB.HLB  —  RMU72  COSI_ERRORS, NOSUCHNET
  no such network available

  Explanation:  A DECnet connection was attempted on a system that
  does not support DECnet, or a TCP/IP connection was attempted on
  a system that does not support TCP/IP.

  User Action:  Do not attempt to use a  network  that  cannot  be
  accessed.
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