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While you can add new symbols to an enum with extends, you cannot do so with role-of. An enum can extend multiple concepts or have multiple roles only if all the target enum concepts have identical symbol sets.

For information, read about Relationships Between Concepts in the Modeling Concepts topic.

Deprecation Stages (learn more)

  • Stage 1: R20H
  • Stage 2: R20K
  • End of Life: None