---
title: "Delete a registration attachment"
method: DELETE
path: "/v1/compliance/attachments/{attachment_id}"
tags: ["attachments"]
---

# Delete a registration attachment

`DELETE /v1/compliance/attachments/{attachment_id}`

## Request

- Base URL: `https://us1.platform.bird.com`
- URL: `https://us1.platform.bird.com/v1/compliance/attachments/{attachment_id}`
- Auth: one of:
  - HTTP bearer
  - API key in cookie `bird_session`

Deletes an uploaded registration attachment. This succeeds only while the file is unused. After a registration cites the attachment, it is retained as evidence and the request returns `409`.

## Headers

- `Idempotency-Key` string
- `X-Workspace-Id` string
- `X-Organization-Id` string

## Response `204`

Attachment deleted.

## Other responses

- `400`: Bad request
- `401`: Authentication required
- `403`: Insufficient permissions
- `404`: Resource not found
- `409`: Resource conflict
- `422`: The request has invalid field values, violates a business rule, or carries a query parameter the endpoint does not declare. Field validation errors use `type: validation_error` and include the affected fields in `details`. Business-rule errors identify the failed rule in `type`.
- `429`: Rate limit exceeded
- `500`: Internal server error
- `503`: The service is temporarily unavailable. If `Retry-After` is present, wait for that delay before retrying; otherwise, retry with exponential backoff. Reuse the same idempotency key and request when retrying a mutation.

## Changes

- **2026-10-20** `a1977645a499`: 1 info
  - endpoint added
- **2026-10-20** `6cec81ac4862`: 1 breaking
  - api path removed without deprecation
- **2026-10-20** `3e2a50466454`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/messagebird/apis/bird-api/changes/v1/compliance/attachments/:attachment_id/delete.md)

---

[API](https://skmtc.dev/messagebird/apis/bird-api.md) · [All operations](https://skmtc.dev/messagebird/apis/bird-api/llms.txt) · [OpenAPI document](https://skmtc.dev/messagebird/apis/bird-api/revisions/a1977645a499?raw)