public function validate_license_key_field( $key, $value ) {
		// Trim whitespaces and strip slashes.
		$value = $this->validate_password_field( $key, $value );

		// Empty license keys have no need test downloading a database.
		if ( empty( $value ) ) {
			return $value;
		}

		// Check the license key by attempting to download the Geolocation database.
		$tmp_database_path = $this->database_service->download_database( $value );
		if ( is_wp_error( $tmp_database_path ) ) {
			WC_Admin_Settings::add_error( $tmp_database_path->get_error_message() );

			// Throw an exception to keep from changing this value. This will prevent
			// users from accidentally losing their license key, which cannot
			// be viewed again after generating.
			throw new Exception( $tmp_database_path->get_error_message() );
		}

		// We may as well put this archive to good use, now that we've downloaded one.
		self::update_database( $tmp_database_path );

		// Remove missing license key notice.
		$this->remove_missing_license_key_notice();

		return $value;
	}