---
title: "POST /billing/threeds/human-credit/callback"
method: POST
path: "/billing/threeds/human-credit/callback"
tags: ["Billing", "Consulting"]
---

# POST /billing/threeds/human-credit/callback

`POST /billing/threeds/human-credit/callback`

Opaque Redsys browser callback for a customer-initiated stored-token human-credit payment. Provider fields are bounded at transport level and verified by the gateway state machine.

## Response `200`

The credit completed or another browser authentication action is rendered.

## Other responses

- `400` — The checkout correlation identifier is missing.
- `413` — The callback exceeds the transport size limit.
- `422` — The stored-token payment continuation could not be completed.

---

[API](https://skmtc.dev/expertschat/apis/billing-core-api.md) · [All operations](https://skmtc.dev/expertschat/apis/billing-core-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/expertschat/billing-core-api/revisions/c6d0e986ce32/schema)