Pre-chargeback alerts are early warnings — sent by card networks and issuers through Ethoca and Verifi (CDRN / RDR) — that let you resolve a transaction before it turns into a chargeback. Justt receives these alerts, normalizes them, and pushes each one to you through the pre_chargeback_alert.received webhook.

Use this endpoint to report back what you did with an alert (for example: refunded the customer, stopped the order, or couldn't act in time). Justt records your response and relays it to the alert provider to complete the resolution.

Typical flow

1. Receive a pre_chargeback_alert.received webhook and match it to the order on your side.
2. Take action (issue a refund, stop fulfillment, etc.).
3. Call this endpoint with the result, using the alert's internalAlertId (from the webhook) as alertId.

This endpoint applies to Ethoca and Verifi CDRN alerts. Verifi RDR alerts resolve automatically through a network-driven refund and don't require a response here — track them through the pre_chargeback_alert.refund.succeeded / pre_chargeback_alert.refund.failed webhook events instead.

Choosing outcome and refunded

outcome and refunded are not free-form — the valid values depend on the provider, and for Ethoca also on the alert type. providerName accepts Ethoca and Verifi CDRN only; Verifi RDR is not supported here (RDR resolves automatically via refund — track it through the pre_chargeback_alert.refund.* webhooks, not this endpoint).

Ethoca — report the refund in refunded and the resolution in outcome. The valid outcome values depend on whether the alert is a fraud alert or a customer-dispute alert.

Ethoca — fraud alerts

Ethoca — customer-dispute alerts

Verifi CDRN — a single set of numeric reason codes. The code you send already states whether a credit was processed, so refunded just mirrors that result.