public function checkout_errors() {
		$this->global_stock()->check_stock();

		//run setup to prevent no statuses on ajax checkout
		tribe( 'tickets.status' )->setup();

		foreach ( (array) edd_get_cart_contents() as $item ) {
			$remaining = $this->stock_control->available_units( $item['id'] );

			// We have to append the item IDs otherwise if we have multiple errors of the same type one will overwrite
			// the other
			if ( ! $remaining ) {
				edd_set_error( 'no_stock_' . $item['id'], sprintf( __( '%s ticket is sold out', 'event-tickets-plus' ), get_the_title( $item['id'] ) ) );
			} elseif ( self::UNLIMITED !== $remaining && $item['quantity'] > $remaining ) {
				edd_set_error( 'insufficient_stock_' . $item['id'], sprintf( __( 'Sorry! Only %d tickets remaining for %s', 'event-tickets-plus' ), $remaining, get_the_title( $item['id'] ) ) );
			}
		}
	}