| Name | Type | Description | Notes |
|---|---|---|---|
| EnforceUniqueness | bool | If true, each Custom Attribute instance associated with this Custom Attribute Definition must have a unique value within the seller's catalog. For example, this may be used for a value like a SKU that should not be duplicated within a seller's catalog. May not be modified after the definition has been created. | [optional] [default to null] |