---
title: "Add One Custom Zone Mapping to One Global Cluster"
method: POST
path: "/api/atlas/v2/groups/{groupId}/clusters/{clusterName}/globalWrites/customZoneMapping"
tags: ["Global Clusters"]
---

# Add One Custom Zone Mapping to One Global Cluster

`POST /api/atlas/v2/groups/{groupId}/clusters/{clusterName}/globalWrites/customZoneMapping`

Creates one custom zone mapping for the specified global cluster. A custom zone mapping matches one ISO 3166-2 location code to a zone in your global cluster. By default, MongoDB Cloud maps each location code to the closest geographical zone.

## Path parameters

- `groupId` string, required
- `clusterName` string, required

## Query parameters

- `envelope` boolean
- `pretty` boolean

## Response `200`

OK

## Other responses

- `400` — Bad Request.
- `401` — Unauthorized.
- `403` — Forbidden.
- `404` — Not Found.
- `429` — Too Many Requests.
- `500` — Internal Server Error.

---

[API](https://skmtc.dev/mongodb/apis/atlas-admin-api.md) · [All operations](https://skmtc.dev/mongodb/apis/atlas-admin-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/mongodb/atlas-admin-api/revisions/e37e8ef8429f/schema)