# `Charon.SessionPlugs.SessionUpdateConflictError`
[🔗](https://github.com/weareyipyip/charon/blob/v4.3.0/lib/charon/session_plugs/update_conflict_error.ex#L1)

Error raised on an optimistic locking error when updating an existing session.

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