# DELETE Delete a legacy fixed-height size

Removes the legacy fixed-height size and returns a deletion receipt: a snapshot of exactly what was removed, so the caller can verify and report the change. A size anything still references is refused with a 409 `resource_in_use` listing the referencing rows, 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. This is the only write the resource offers. Deleting the last one leaves a fixed-height customiser with no sizes at all, and nothing on this API can put one back, so retire the customiser's pricing model first if it is still selling. 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-legacy-fixed-height-size/
- Markdown URL: https://www.signcustomiser.com/help/api/v3-delete-delete-a-legacy-fixed-height-size.md
- Group: Customiser legacy fixed-height sizes
- Method: DELETE
- Path: /api/v3/customisers/{customiser_id}/legacy-fixed-height-sizes/{legacy_size_id}
- Auth: Bearer token
- Required scopes: `customisers:write`

## Path parameters

- customiser_id (string, required): The customiser id. Example: 1
- legacy_size_id (string, required): The legacy fixed-height size id. Example: 4

## cURL example

```bash
curl https://web.signcustomiser.com/api/v3/customisers/1/legacy-fixed-height-sizes/4 \
  --request DELETE \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_API_TOKEN'
```

## Response examples

### 200 DELETE 200 example 1

```json
{
  "data": {
    "object": "legacy_fixed_height_size_deletion_receipt",
    "id": 4,
    "customiser_id": 42,
    "deleted": true,
    "resource": {
      "object": "legacy_fixed_height_size",
      "id": 4,
      "customiser_id": 42,
      "name": "30cm high",
      "description": null,
      "char_limit": 12,
      "line_limit": 1,
      "min_char": 1,
      "height_cm": 30,
      "sort_order": 1,
      "created_at": "2026-08-13T00:00:00Z",
      "updated_at": "2026-08-13T00:00:00Z"
    }
  },
  "links": {
    "self": "https://web.signcustomiser.com/api/v3/customisers/42/legacy-fixed-height-sizes/4",
    "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 size

```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 Size 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 legacy fixed-height size is still referenced by font records.",
  "errors": [
    {
      "pointer": "",
      "code": "resource_in_use",
      "detail": "The legacy fixed-height size is referenced by other records."
    }
  ],
  "referenced_by": [
    {
      "type": "font",
      "id": 19
    }
  ],
  "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"
}
```