# 409 transaction_id_conflict

**Transaction identifier conflict**

This transaction identifier was already used with a different request.

- HTTP status: 409
- Problem identifier (`type` field): `https://developer.noryo.app/errors/transaction_id_conflict`

[← Errors — Merchant API](https://developer.noryo.app/en-GB/errors)

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Canonical page: https://developer.noryo.app/en-GB/errors/transaction_id_conflict