eventespresso / event-espresso-core

			return false;

		}

		$ticket = $registration->ticket();

		if ( ! $ticket instanceof EE_Ticket ) {

			throw new EE_Error(

				sprintf(

					__( 'The Ticket for Registration %1$d was not found or is invalid.',

						'event_espresso' ),

					$registration->ticket_ID()

				)

			);

		}

		$registration->set_final_price( $ticket->price() );

		if ( $update_reg ) {

			$registration->save();

			$transaction->ID(),

			$registration->ticket_ID()

		);

		if ( ! $ticket_line_item instanceof EE_Line_Item ) {

			throw new EE_Error(

				sprintf(

					__( 'The Line Item for Transaction %1$d and Ticket %2$d was not found or is invalid.',

						'event_espresso' ),

					$transaction->ID(),

					$registration->ticket_ID()

				)

			);

		}

		return $ticket_line_item;

	}