protected function validate_request( $id, $type, $context ) {

		try {
			$id = absint( $id );

			// validate ID
			if ( empty( $id ) ) {
				throw new WC_API_Exception( 'woocommerce_api_invalid_customer_id', __( 'Invalid customer ID', 'woocommerce' ), 404 );
			}

			// non-existent IDs return a valid WP_User object with the user ID = 0
			$customer = new WP_User( $id );

			if ( 0 === $customer->ID ) {
				throw new WC_API_Exception( 'woocommerce_api_invalid_customer', __( 'Invalid customer', 'woocommerce' ), 404 );
			}

			// validate permissions
			switch ( $context ) {

				case 'read':
					if ( ! current_user_can( 'list_users' ) ) {
						throw new WC_API_Exception( 'woocommerce_api_user_cannot_read_customer', __( 'You do not have permission to read this customer', 'woocommerce' ), 401 );
					}
					break;

				case 'edit':
					if ( ! wc_rest_check_user_permissions( 'edit', $customer->ID ) ) {
						throw new WC_API_Exception( 'woocommerce_api_user_cannot_edit_customer', __( 'You do not have permission to edit this customer', 'woocommerce' ), 401 );
					}
					break;

				case 'delete':
					if ( ! wc_rest_check_user_permissions( 'delete', $customer->ID ) ) {
						throw new WC_API_Exception( 'woocommerce_api_user_cannot_delete_customer', __( 'You do not have permission to delete this customer', 'woocommerce' ), 401 );
					}
					break;
			}

			return $id;
		} catch ( WC_API_Exception $e ) {
			return new WP_Error( $e->getErrorCode(), $e->getMessage(), array( 'status' => $e->getCode() ) );
		}
	}