Library /sys$common/syshlp/RDOHELP72.HLB  —  Replication Option, RDMS_ERRORS, UNSSYNONYM
  this database does not have synonyms enabled

  Explanation:  Synonyms can not be created,  altered  or  dropped
  because   this   database   does   not   support   the  SYNONYMS
  functionality.

  User Action:  Use ALTER DATABASE and specify the clause SYNONYMS
  ARE  ENABLED  so  that the appropriate system tables and support
  are enabled, then retry this command.
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