RDOHELP72.HLB  —  Replication Option, COSI_ERRORS, INVSTRDES
  invalid string descriptor

  Explanation:  A string descriptor passed to  a  general  library
  procedure did not contain a valid CLASS field.

  User Action:  Locate the call to the  library  that  caused  the
  error,   and  initialize  the  field  to  the  proper  class  of
  descriptor.
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