# VoucherifySdk::ManagementProjectsMetadataSchemasUpdateRequestBody

## Properties

| Name | Type | Description | Notes |
| ---- | ---- | ----------- | ----- |
| **allow_defined_only** | **Boolean** | Restricts the creation of metadata fields when set to `true`. In other words, it indicates whether or not you are allowed to create new metadata definitions; for example, in the campaign manager or publication manager. If it is set to true, then only the defined fields will be available for assigning values.  | [optional] |
| **properties** | [**Hash<String, ManagementProjectsMetadataSchemaDefinition>**](ManagementProjectsMetadataSchemaDefinition.md) | Contains metadata definitions. There can be many properties within this object.  Only the properties sent in the request will be updated. However, if you send a property, all its key-value pairs must be provided - otherwise, they will be overwritten to new values.  You cannot change the `\"type\"` property. However, it is required, so you need to add it to the request. | [optional] |