---
title: "Card Dispute & Chargeback Reason Code Mapper"
method: POST
path: "/v1/tools/lookup_dispute_reason_code"
tags: ["chargeback", "dispute", "reason codes", "Visa", "Mastercard", "Amex", "VDR", "MDR", "CMG", "representment"]
---

# Card Dispute & Chargeback Reason Code Mapper

`POST /v1/tools/lookup_dispute_reason_code`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/lookup_dispute_reason_code`
- Auth: none declared

Quick-reference lookup for 60 Visa VDR, Mastercard MDR, and Amex CMG dispute reason codes. Provides required response documentation, filing and rebuttal deadlines, and arbitration rules. No AP2 export — companion reference tool to the Chargeback Representment Builder (Tool 41).

**Tool URL:** https://ainumbers.co/tools/227-card-dispute-reason-code-mapper.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `reason_code` string, required
  - `scheme` 'visa' | 'mc' | 'amex' | 'all'

## Response `200`

Successful tool execution result

- object
  - `code` string
  - `scheme` string
  - `title` string
  - `category` string
  - `required_documentation` string[]
  - `chargeback_deadline` string
  - `rebuttal_deadline` string
  - `arbitration_path` string
  - `notes` string

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)