# Criteria for deleting landmark information

The `criteria` object specifies the landmark or landmark category to delete.

The `criteria` object has two main properties: `Type` and `Data`. These are described in the following table.

Table: Criteria object properties
Property | Description | Type | Value
--- | --- | --- | ---
`criteria.Type` | Specifies the type of landmark information to delete. | string | Possible values: `"Landmark"` `"Category"`
`criteria.Data` | Specifies the landmark or landmark category to delete. | object | Object with the properties specified below
`[criteria.Data.DatabaseURI]` | Specifies the URI of the landmark database from which to delete the landmark or landmark category. If this property is not specified, the delete operation is performed on the default database. | string | For example: `file://c:landmarks.ldb`
`criteria.Data.id` | Specifies the unique ID of the landmark or landmark category to delete. Use the `GetList` method to retrieve this ID. |  |