Alert status warning when ever alert is triggered

Summary:

we have created an alert for Visa expiration which has the below group by groovy script . This configuration works as expected in case of employees with single assignment. in case if employee has multiple assignment we are getting [Group by Expression Val is Null ${AlertUtils.empManager(emps.PersonId).WorkEmail}} though line managers exists for both the assignments. refresh hierarchy has been run still the same issue. should we need to tweak the group by expression to handle this multiple assignment scenario. if any one has come across this kind of requirement kindly share your inputs.

Group By : ${AlertUtils.empManager(emps.PersonId).WorkEmail}