Customiser support finishes

Update a support finish

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Applies an RFC 7396 JSON Merge Patch to one support finish: properties omitted from the body are unchanged, and null clears a nullable property (description, hexcode, min_width_cm, min_height_cm). Arrays are replaced wholesale, so backboard_ids replaces the whole assignment and must still name at least one of this customiser's backboards.

PATCH/api/v3/customisers/{customiser_id}/support-finishes/{support_finish_id}

Update a support finish

Applies an RFC 7396 JSON Merge Patch to one support finish: properties omitted from the body are unchanged, and `null` clears a nullable property (`description`, `hexcode`, `min_width_cm`, `min_height_cm`). Arrays are replaced wholesale, so `backboard_ids` replaces the whole assignment and must still name at least one of this customiser's backboards. Read-only and unknown fields are rejected — sending one at all is a 422, whatever its value. An empty object `{}` is a valid no-op. `hexcode` and `opacity` are two halves of one stored colour: naming either leaves the other as it was. The patched result must still be renderable, so clearing the `hexcode` of a `colour` finish is a 422 `colour_value_required`, and switching to the `texture` kind is refused with a 422 `texture_image_required` unless the finish already carries a texture image. Requires `customisers:write`. An `Idempotency-Key` is optional here: sending one makes the update safe to retry (an exact repeat replays the original response; the same key with a different body is a 409). The update clears the customiser's cached storefront configuration and runs the advisory language sync, and never regenerates Shopify products, product images, or the product cache.

Authorisation

Authorizationstring<bearer>required

The Authorization header expects a Bearer token. Generate one on the API keys page in your dashboard.

Path

customiser_idintegerrequired

The customiser id.

support_finish_idintegerrequired

The support finish id, from the list support finishes operation.

Bodyapplication/json

Update a support finish

Overview

Read-only and unknown fields are rejected — sending one at all is a 422, whatever its value. An empty object {} is a valid no-op. hexcode and opacity are two halves of one stored colour: naming either leaves the other as it was. The patched result must still be renderable, so clearing the hexcode of a colour finish is a 422 colour_value_required, and switching to the texture kind is refused with a 422 texture_image_required unless the finish already carries a texture image. Requires customisers:write. An Idempotency-Key is optional here: sending one makes the update safe to retry (an exact repeat replays the original response; the same key with a different body is a 409). The update clears the customiser's cached storefront configuration and runs the advisory language sync, and never regenerates Shopify products, product images, or the product cache.

Authorisation

Bearer token required. Include it in the Authorization header.

Required scope: customisers:write

Path parameters

customiser_idstringpathrequired

The customiser id.

Example: 1

support_finish_idstringpathrequired

The support finish id.

Example: 27

Request body

finish_kindstringbody

min_size_rulestringbody

price_multiplier_targetstringbody

namestringbody

descriptionstringbody

hexcodestringbody

opacitynumberbody

applied_to_visualisationbooleanbody

backboard_idsarraybody

base_priceintegerbody

price_multipliernumberbody

Request body example

{
  "finish_kind": "colour",
  "min_size_rule": "any",
  "price_multiplier_target": "base_letter_price",
  "name": "Gloss Black",
  "description": "A deep gloss black",
  "hexcode": "#111111",
  "opacity": 0.8,
  "applied_to_visualisation": true,
  "backboard_ids": [
    11
  ],
  "base_price": 500,
  "price_multiplier": 1.2
}

Update a support finish

curl https://web.signcustomiser.com/api/v3/customisers/1/support-finishes/27 \
  --request PATCH \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_API_TOKEN' \
  --header 'Content-Type: application/json' \
  --data '{
  "finish_kind": "colour",
  "min_size_rule": "any",
  "price_multiplier_target": "base_letter_price",
  "name": "Gloss Black",
  "description": "A deep gloss black",
  "hexcode": "#111111",
  "opacity": 0.8,
  "applied_to_visualisation": true,
  "backboard_ids": [
    11
  ],
  "base_price": 500,
  "price_multiplier": 1.2
}'

{
  "data": {
    "object": "support_finish",
    "id": 27,
    "customiser_id": 42,
    "name": "Gloss Black",
    "description": "A deep gloss black",
    "finish_kind": "colour",
    "hexcode": "#111111",
    "opacity": 0.8,
    "applied_to_visualisation": true,
    "backboard_ids": [
      11
    ],
    "min_width_cm": null,
    "min_height_cm": null,
    "min_size_rule": "any",
    "base_price": 500,
    "currency": "USD",
    "price_multiplier": 1,
    "price_multiplier_target": "base_letter_price",
    "sort_order": 1,
    "preview_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/support-finishes/27",
    "documentation": "https://www.signcustomiser.com/help/api/"
  },
  "meta": {
    "api_version": "v3",
    "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
  }
}

{
  "type": "https://www.signcustomiser.com/help/api/problems/malformed_json",
  "title": "Malformed JSON",
  "status": 400,
  "code": "malformed_json",
  "detail": "The request body is not valid JSON: Syntax error.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}

{
  "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"
}

{
  "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"
}

{
  "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"
}

{
  "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"
}

{
  "type": "https://www.signcustomiser.com/help/api/problems/request_too_large",
  "title": "Request too large",
  "status": 413,
  "code": "request_too_large",
  "detail": "The request body must not exceed 2 MiB.",
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}

{
  "type": "https://www.signcustomiser.com/help/api/problems/validation_failed",
  "title": "Validation failed",
  "status": 422,
  "code": "validation_failed",
  "detail": "The request payload failed validation.",
  "errors": [
    {
      "pointer": "/sort_order",
      "code": "prohibited",
      "detail": "The sort order field is prohibited."
    }
  ],
  "request_id": "req_01jz9x2k7c8f3m5n6p7q8r9s0t"
}

{
  "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"
}