# DELETE Delete a letter part colour image

Clears one of the colour's image slots and deletes the stored file, returning a receipt naming what was removed and the colour as it now stands. Requires `customisers:write` and an `Idempotency-Key`. Deleting from a slot that holds no image answers 404. Deleting the texture image of a colour whose `texture` is `custom_texture` is refused with 422 `texture_image_required`: the finish renders from that image, and the storefront could not draw the colour without it. Change `texture` on the colour first, then delete the image. 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-letter-part-colour-image/
- Markdown URL: https://www.signcustomiser.com/help/api/v3-delete-delete-a-letter-part-colour-image.md
- Group: Customiser letter parts
- Method: DELETE
- Path: /api/v3/customisers/{customiser_id}/letter-types/{letter_type_id}/letter-parts/{letter_part}/colours/{colour_id}/images/{image_slot}
- Auth: Bearer token
- Required scopes: `customisers:write`

## Path parameters

- customiser_id (string, required): The customiser id. Example: 1
- letter_type_id (string, required): The letter type id. Example: 3
- letter_part (string, required): The letter part the colour belongs to. Example: face
- colour_id (string, required): The colour id. Example: 7
- image_slot (string, required): Which image to remove: `image`, `example_image` or `texture_image`. Example: image

## cURL example

```bash
curl https://web.signcustomiser.com/api/v3/customisers/1/letter-types/3/letter-parts/face/colours/7/images/image \
  --request DELETE \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_API_TOKEN'
```

## Response examples

### 200 DELETE 200 example 1

```json
{
  "data": {
    "object": "file_deletion_receipt",
    "slot": "image",
    "customiser_id": 42,
    "letter_type_id": 3,
    "letter_part": "face",
    "colour_id": 7,
    "deleted": true,
    "removed_file": {
      "filename": "warm-white.png",
      "url": "https://cdn.example.com/files/2f1c9c0e-6a7b-4c1d-8e2f-3a4b5c6d7e8f.png"
    },
    "resource": {
      "object": "colour",
      "id": 7,
      "customiser_id": 42,
      "name": "Warm White",
      "description": null,
      "colour_type": "single",
      "hexcode": "#FFEEDD",
      "multi_colour_hexcodes": null,
      "texture": "flat",
      "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,
      "image_url": null,
      "example_image_url": null,
      "texture_image_url": null,
      "created_at": "2026-08-13T00:00:00Z",
      "updated_at": "2026-08-13T00:05:00Z"
    }
  },
  "links": {
    "self": "https://web.signcustomiser.com/api/v3/customisers/42/letter-types/3/letter-parts/face/colours/7/images/image",
    "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 Empty slot

```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 Idempotency conflict

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/idempotency_key_conflict",
  "title": "Idempotency key conflict",
  "status": 409,
  "code": "idempotency_key_conflict",
  "detail": "This Idempotency-Key was already used for a different request body on this operation.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 422 Texture image still in use

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/texture_image_required",
  "title": "Texture image required",
  "status": 422,
  "code": "texture_image_required",
  "detail": "This colour uses the custom_texture finish, which renders from its texture image, so the image cannot be removed while the finish is set. Change texture first, then delete the image.",
  "errors": [
    {
      "pointer": "/texture",
      "code": "texture_image_required",
      "detail": "The custom_texture finish requires a texture image."
    }
  ],
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}
```

### 422 Letter types not supported

```json
{
  "type": "https://www.signcustomiser.com/help/api/problems/letter_types_not_supported",
  "title": "Letter types not supported",
  "status": 422,
  "code": "letter_types_not_supported",
  "detail": "This customiser cuts its sign from a single sheet, so it offers no letter types and none can be created. Read the customiser to see which families it supports.",
  "errors": [
    {
      "pointer": "",
      "code": "letter_types_not_supported",
      "detail": "This customiser category does not offer letter types."
    }
  ],
  "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"
}
```