function bp_core_install_invitations() {
	$sql             = array();
	$charset_collate = $GLOBALS['wpdb']->get_charset_collate();
	$bp_prefix       = bp_core_get_table_prefix();
	$sql[] = "CREATE TABLE {$bp_prefix}bp_invitations (
		id bigint(20) NOT NULL AUTO_INCREMENT PRIMARY KEY,
		user_id bigint(20) NOT NULL,
		inviter_id bigint(20) NOT NULL,
		invitee_email varchar(100) DEFAULT NULL,
		class varchar(120) NOT NULL,
		item_id bigint(20) NOT NULL,
		secondary_item_id bigint(20) DEFAULT NULL,
		type varchar(12) NOT NULL DEFAULT 'invite',
		content longtext DEFAULT '',
		date_modified datetime NOT NULL,
		invite_sent tinyint(1) NOT NULL DEFAULT '0',
		accepted tinyint(1) NOT NULL DEFAULT '0',
		KEY user_id (user_id),
		KEY inviter_id (inviter_id),
		KEY invitee_email (invitee_email),
		KEY class (class),
		KEY item_id (item_id),
		KEY secondary_item_id (secondary_item_id),
		KEY type (type),
		KEY invite_sent (invite_sent),
		KEY accepted (accepted)
		) {$charset_collate};";
	dbDelta( $sql );

	/**
	 * Fires after BuddyPress adds the invitations table.
	 *
	 * @since 5.0.0
	 */
	do_action( 'bp_core_install_invitations' );
}