# DELETE Delete a mounting colour

Removes the mounting colour and returns a deletion receipt: a snapshot of exactly what was removed, so the caller can verify and report the change. The colour stops being offered immediately and never comes back on this API — a later read answers 404 exactly as an unknown id does. A colour anything still references is refused with a 409 `resource_in_use` listing the referencing rows — saved presets that chose it — and references are never silently cleared. Requires `customisers:write` and an `Idempotency-Key`; retrying the same request and key replays the original receipt after the row is gone. The delete clears the customiser's cached storefront configuration and runs the advisory language sync, and never regenerates Shopify products, product images, or the product cache.

- Source URL: https://www.signcustomiser.com/help/api/v3-delete-delete-a-mounting-colour/
- Markdown URL: https://www.signcustomiser.com/help/api/v3-delete-delete-a-mounting-colour.md
- Group: Customiser mounting colours
- Method: DELETE
- Path: /api/v3/customisers/{customiser_id}/mounting-colours/{mounting_colour_id}
- Auth: Bearer token
- Required scopes: `customisers:write`

## Path parameters

- customiser_id (string, required): The customiser id. Example: 1
- mounting_colour_id (string, required): The mounting colour id. Example: 14

## cURL example

```bash
curl https://web.signcustomiser.com/api/v3/customisers/1/mounting-colours/14 \
  --request DELETE \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_API_TOKEN'
```

## Response examples

### 200 DELETE 200 example 1

```json
{
  "data": {
    "object": "mounting_colour_deletion_receipt",
    "id": 14,
    "customiser_id": 42,
    "deleted": true,
    "resource": {
      "object": "mounting_colour",
      "id": 14,
      "customiser_id": 42,
      "name": "Brushed Steel",
      "description": null,
      "hexcode": "#b5b5b5",
      "opacity": 1,
      "applied_to_visualisation": true,
      "mounting_ids": [
        8
      ],
      "min_width_cm": null,
      "min_height_cm": null,
      "min_size_rule": "any",
      "base_price": 0,
      "currency": "USD",
      "price_multiplier": 1,
      "price_multiplier_target": "base_letter_price",
      "sort_order": 1,
      "preview_image_url": null,
      "example_image_url": null,
      "created_at": "2026-08-13T00:00:00Z",
      "updated_at": "2026-08-13T00:00:00Z"
    }
  },
  "links": {
    "self": "https://web.signcustomiser.com/api/v3/customisers/42/mounting-colours/14",
    "documentation": "https://www.signcustomiser.com/help/api/"
  },
  "meta": {
    "api_version": "v3",
    "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
  }
}
```

### 400 Missing idempotency key

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/missing_idempotency_key",
  "title": "Missing idempotency key",
  "status": 400,
  "code": "missing_idempotency_key",
  "detail": "Provide an Idempotency-Key header for this write.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 401 Missing API key

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/missing_api_key",
  "title": "Missing API key",
  "status": 401,
  "code": "missing_api_key",
  "detail": "Provide a store API key as a bearer token.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 403 Insufficient scope

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/insufficient_scope",
  "title": "Insufficient scope",
  "status": 403,
  "code": "insufficient_scope",
  "detail": "This operation requires the customisers:write scope.",
  "required_scopes": [
    "customisers:write"
  ],
  "granted_scopes": [
    "customisers:read"
  ],
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 404 Unknown mounting colour

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/resource_not_found",
  "title": "Resource not found",
  "status": 404,
  "code": "resource_not_found",
  "detail": "The requested resource does not exist or does not belong to the authenticated store.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 409 Mounting colour still referenced

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/resource_in_use",
  "title": "Resource in use",
  "status": 409,
  "code": "resource_in_use",
  "detail": "This mounting colour is still referenced by customiser_preset records.",
  "errors": [
    {
      "pointer": "",
      "code": "resource_in_use",
      "detail": "The mounting colour is referenced by other records."
    }
  ],
  "referenced_by": [
    {
      "type": "customiser_preset",
      "id": 31
    }
  ],
  "referenced_by_count": 1,
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 422 Unknown parameter

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/unknown_parameter",
  "title": "Unknown query parameter",
  "status": 422,
  "code": "unknown_parameter",
  "detail": "This endpoint accepts no query parameters.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 429 Option write budget exhausted

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/rate_limited",
  "title": "Too many requests",
  "status": 429,
  "code": "rate_limited",
  "detail": "You have exceeded the request limit for this API key.",
  "retry_after": 37,
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```