Uses Teams [cmdb_rel_team] - Related List on Configuration Item for VR Assignment Rules

assign_rules_teams.js

/*
https://docs.servicenow.com/bundle/tokyo-servicenow-platform/page/product/configuration-management/reference/r_RelatedListsOfCIComponents.html
Docs: Related Lists of CI components

Use Case
You can not add an Assignment Group to the CMDB, and you want to use the 'Teams' CI Related List instead
*/

//Assignment Rule :: Assign Using :: Script

function getAssignment(ci,group_type){
	/*
	ci(string) expects the sys_id of a Configuration Item
	group_type(string) expects that value of Group Type (Choice List)
	*/
	
	//Testing,pick an Assignment Group
	var default_assignment_group = '679434f053231300e321ddeeff7b12d8';
	
	//use gs.getProperty() for real
	//var default_assignment_group = gs.getProperty('');
	
	var teams = new GlideRecord('cmdb_rel_team');//Teams Table
    	teams.addEncodedQuery('group_type=' + group_type + '^ci=' + ci);
    	teams.setLimit(1);
    	teams.query();
    	while(teams.next()){
        	return teams.user_group;
    	}
	/*
	Else Return a Default Assignment Group
	If the Conditions in an Assignment Rule match, VR expects an Assignment Group
	if no assignment group is provided, the VI will NOT be assigned.
	*/
	return default_assignment_group;
}

current.assignment_group = getAssignment(current.cmdb_ci,'security');