RDOHELP72.HLB  —  Replication Option, COSI_ERRORS, SIGNAL21
  signal SIGTTIN, code <num>

  Explanation:  A 'background read from control  tty'  signal  was
  raised as an exception in response to the arithmetic or software
  condition specified by the given code.

  User Action:  Eliminate the cause of  the  error  condition  and
  retry the operation.
Close Help