> For the complete documentation index, see [llms.txt](https://apidocs.akinon.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.akinon.com/commerce-openapis/admin/attributes/attribute-values/update-an-attribute-value.md).

# Update an attribute value

Replaces the details of an existing attribute value. Provide the full set of writable fields. The `attribute` + `value` uniqueness rule is re-checked.

**Dynamic Setting**

| Setting Key               | Type             | Default | Effect                                                                                                                                                                          |
| ------------------------- | ---------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `LANDING_PAGE_ATTRIBUTES` | array of strings | `[]`    | When the parent attribute's `key` is in this list, the attribute value's landing page is created or kept in sync. See the **Dynamic Settings & Environment Variables** section. |

```json
{"openapi":"3.1.0","info":{"title":"Admin API","version":"1.0.0"},"tags":[{"name":"Attribute Values","description":"Predefined values of an attribute (for example `Red` and `Blue` for a `color` attribute). Used by dropdown, multiple-select, and value/label attributes. See the **Attributes** section for the shared concepts."}],"servers":[{"description":"Omnitron Remote Proxy (external access — recommended)","url":"https://{omnitron_url}/api/remote/{channel_id}","variables":{"omnitron_url":{"default":"sandbox.akinon.com","description":"Omnitron server URL (e.g., {omnitron.akinon.com})"},"channel_id":{"default":"1","description":"The channel identifier the remote request is routed through"}}},{"description":"Commerce API Server (internal / direct access only)","url":"https://{commerce_url}/api/v1","variables":{"commerce_url":{"default":"sandbox.akinon.com","description":"Internal commerce server URL, reachable only from within the Omnitron network"}}}],"security":[{"tokenAuth":[]}],"components":{"securitySchemes":{"tokenAuth":{"type":"apiKey","in":"header","name":"Authorization","description":"Token credential sent in the Authorization header, in the form: `Token <your-token>`. Requires a staff (admin) account."}},"schemas":{"AttributeValueRequest":{"type":"object","description":"The payload accepted when creating or fully updating an attribute value.","required":["attribute","value"],"properties":{"attribute":{"type":"integer","description":"The identifier of the parent attribute. Together with `value`, must be unique."},"value":{"type":"string","description":"The value. Together with `attribute`, must be unique."},"order":{"type":["integer","null"],"description":"The sort order of the value. When omitted, the server tries to derive it from the numeric interpretation of `value`."},"label":{"type":["string","null"],"description":"The translatable display label of the value."},"translations":{"type":["object","null"],"writeOnly":true,"description":"Localized values of the translatable fields, keyed by language code. Write-only.","additionalProperties":true}}},"AttributeValue":{"type":"object","description":"A predefined value of an attribute as returned by the API.","properties":{"pk":{"type":"integer","description":"The unique identifier of the attribute value.","readOnly":true},"attribute":{"type":"integer","description":"The identifier of the parent attribute."},"value":{"type":"string","description":"The value."},"order":{"type":["integer","null"],"description":"The sort order of the value. Values are listed by `order`, then `value`."},"label":{"type":["string","null"],"description":"The translatable display label of the value, when any."}}},"ValidationError":{"type":"object","description":"Returned when the request contains invalid or missing data. Errors are grouped by the field they apply to: each key is the name of a field from the request and its value is a list of one or more messages describing what is wrong with that field. Messages that do not belong to any single field are grouped under `non_field_errors`.","properties":{"non_field_errors":{"type":"array","description":"Error messages that apply to the request as a whole rather than to a specific field.","items":{"type":"string"}}},"additionalProperties":{"type":"array","description":"The list of error messages for the field named by the key.","items":{"type":"string"}}},"Error":{"type":"object","description":"An error response.","properties":{"detail":{"type":"string","description":"A human-readable description of the error."}},"additionalProperties":true}},"responses":{"ValidationError":{"description":"The request contains invalid or missing data.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ValidationError"}}}},"Unauthorized":{"description":"Authentication credentials were not provided or are invalid.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/Error"}}}},"Forbidden":{"description":"The authenticated user does not have administrator privileges.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/Error"}}}},"AttributeValueNotFound":{"description":"The requested attribute value does not exist.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/Error"}}}}}},"paths":{"/attribute_value/{id}/":{"put":{"tags":["Attribute Values"],"operationId":"updateAttributeValue","summary":"Update an attribute value","description":"Replaces the details of an existing attribute value. Provide the full set of writable fields. The `attribute` + `value` uniqueness rule is re-checked.\n\n**Dynamic Setting**\n\n| Setting Key | Type | Default | Effect |\n|-------------|------|---------|--------|\n| `LANDING_PAGE_ATTRIBUTES` | array of strings | `[]` | When the parent attribute's `key` is in this list, the attribute value's landing page is created or kept in sync. See the **Dynamic Settings & Environment Variables** section. |","requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/AttributeValueRequest"}}}},"responses":{"200":{"description":"The updated attribute value.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/AttributeValue"}}}},"400":{"$ref":"#/components/responses/ValidationError"},"401":{"$ref":"#/components/responses/Unauthorized"},"403":{"$ref":"#/components/responses/Forbidden"},"404":{"$ref":"#/components/responses/AttributeValueNotFound"}}}}}}
```


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