# (NEW!) Update Metadata Attribute

Partially update an existing metadata attribute. Only fields included in the request body will be updated — omitted fields remain unchanged.

Fields that cannot be updated: attributeType, vocabularyId, searchField.

Business Rules (enforced on update):
- isRequired: true and isSensitive: true cannot both be set.
- isFacetable: true requires isSearchable: true.
- isRequired: true or isTypeahead: true cannot have technicalMetadataMapping values.
- maxCharacterLength cannot exceed 250 for textbox or 10,000 for textarea.
- Textarea attributes cannot be set to isFacetable: true or isTypeahead: true.
- isMultiSelect can be changed from false to true, but NOT from true to false.

The user submitting the request must have the Metadata Management admin privilege.

Endpoint: PATCH /metadata/attribute/{id}
Version: 1.5
Security: ApiKeyAuth, BasicAuth

## Header parameters:

  - `X-API-Key` (string, required)
    Customer-specific API key required to invoke API.

  - `Authorization` (string, required)
    Provided by Authentication Token creation operation.

  - `Content-Type` (string, required)
    Enum: "application/json"

## Path parameters:

  - `id` (string, required)
    The unique ID of the metadata attribute to update.
    Example: "52ce0235-02cc-46f6-8bdb-05238c76bf83"

## Response 400 fields (application/json):

  - `message` (string)

  - `detail` (string)

## Response 401 fields (application/json):

  - `message` (string)

  - `detail` (string)

## Response 403 fields (application/json):

  - `message` (string)

  - `detail` (string)

## Response 404 fields (application/json):

  - `message` (string)

  - `detail` (string)