public function schedule_recurring_payment( $next_payment_date = false, $gmt = false ) {

		// Unschedule the next action (does nothing if no action scheduled).
		$this->unschedule_recurring_payment();

		$date = $this->get_recurring_payment_due_date_for_scheduler( $next_payment_date, $gmt );

		if ( is_wp_error( $date ) ) {
			return $date;
		}

		$action_args = $this->get_action_args();

		// Schedule the payment.
		$action_id = as_schedule_single_action(
			$date,
			'llms_charge_recurring_payment',
			$action_args
		);

		/**
		 * Fired after a recurring payment is scheduled
		 *
		 * @since 5.2.0
		 *
		 * @param LLMS_Order $order       LLMS_Order instance.
		 * @param integer    $date        Timestamp of the recurring payment date UTC.
		 * @param array      $action_args Arguments passed to the scheduler.
		 * @param integer    $action_id   Scheduled action ID.
		 */
		do_action( 'llms_charge_recurring_payment_scheduled', $this, $date, $action_args, $action_id );

		return $action_id;
	}