System Property throwing error

[Hemant Kumar Ch]

Hello Team

We are using Below Scripts but the script throwing an error message in Service portal

Not allowed to update the property : property name 

var GRPSYS_ID = 'd625dccec0a8016700a222a0f7900d06'; //Put the sys_id of the assignment group (or groups comma separated) here. Or set this in a system property and grab it here.
	var lstAssigned = gs.getProperty("rr.last_assigned_to"); //Get the sys_id of the user most recently assigned to by this rule.

	//Make an array of all users in the group(s), ordered alphabetically by name:
	var userList = [];
	var userHasGroup = new GlideRecord('sys_user_grmember');
	userHasGroup.addQuery('available', true);
	userHasGroup.addQuery('group', 'IN', GRPSYS_ID);
	//userHasGroup.orderBy('user.name');
	userHasGroup.query();
	while (userHasGroup.next())
		userList.push(userHasGroup.getValue('user'));

	var nextUserIndex = userList.indexOf(lstAssigned) + 1;
	if (nextUserIndex == userList.length)
		nextUserIndex = 0;
	var nextUser = userList[nextUserIndex];
	current.assigned_to = nextUser;
	gs.setProperty("rr.last_assigned_to", nextUser); //Update the property with the sys_id of the user most recently assigned to by this rule.

This is for Round Robin ,Any thoughts how to fix this 

[Abhijit4]

Yeah, that looks correct. If your issue is resolved then please mark appropriate answer as Correct or Helpful.

[Hemant Kumar Ch]

Hello Abhijit

But the script is not working ,It is assigning to same user ,Could you Please look

[Hemant Kumar Ch]

Hello Abhijit

Any Update?

[Abhijit4]

Did you check what value are you getting in  nextUser variable after below assignment?

var nextUser = userList[nextUserIndex];

 It should give other user than what you have in custom table, then you can say your issue is resolved.

Also below line :

userHasGroup.addQuery('available', true);

There is no 'available' field on ' sys_usergrpmember table, make sure you have written that part of code correctly, if you have created custom field then it should have been u_available.

Please mark answer as Correct or Helpful based on impact.

[Hemant Kumar Ch]

Hello Abhijit

It is giving the same user  every time I have put in my custom table value field 

Could you please look and it is u_available updated in script?