---
title: "Delete a custom field (v2)"
method: DELETE
path: "/v2/custom-fields/{customFieldId}"
tags: ["custom-fields"]
---

# Delete a custom field (v2)

`DELETE /v2/custom-fields/{customFieldId}`

Permanently delete a custom field definition (per-contact values cascade). Returns `{ data: { affected: 1, ids: [customFieldId] } }`. `Idempotency-Key` is optional. Deleting a missing field returns 404 (v1 silently answered 200).

## Path parameters

- `customFieldId` string, uuid, required

## Headers

- `Idempotency-Key` string

## Response `200`

Successful response

- object
  - `data` object, required
    - `affected` integer, required
    - `ids` string[]
    - `failed` object[]
      - `id` string, required
      - `error` object, required
        - `code` string, required
        - `message` string, required

## Other responses

- `400` — Request body failed validation.
- `401` — Missing or invalid API key.
- `403` — Valid key, insufficient permission.
- `404` — Resource does not exist.
- `409` — Request body failed validation.
- `429` — Rate limit exceeded.
- `500` — Unexpected server error.

---

[API](https://skmtc.net/getdex/apis/dex-public-api.md) · [All operations](https://skmtc.net/getdex/apis/dex-public-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/getdex/dex-public-api/versions/6f01cd52ac12/schema)