# `Chronicle.Events.MultipleMigratorsForSameEventTypeGeneration`
[🔗](https://github.com/Cratis/Chronicle.Elixir/blob/main/lib/chronicle/events/multiple_migrators_for_same_event_type_generation.ex#L4)

Raised when more than one migration module defines the migration between the same pair of
generations for an event type. Exactly one migrator may bridge a pair of generations.

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*Consult [api-reference.md](api-reference.md) for complete listing*