This API allows creation of multiple file attributes for a filesystem denoted by fs_id, along with their custom fields. The custom field ids can be obtained using the Custom Fields API (https://{base-url}/openapi/custom_field/). Please read the request schema for more information. This endpoint should not be used to update data objects. All fields not included in the request will be set to a default value. The user must be a Server Admin or the FileSystem Admin with Source Admin or Catalog Admin role. Maximum payload size is 10,000 objects.