How to group alerts in alerts composer to send a single email

Content

Hi All,

I have created an alert that is sending email to payroll representative. This is working fine but Payroll rep is receiving multiple emails for each employee. I am planning to group it so that he receives a single email with details of all employees.

I have put below code in the body

${AlertUtils.loop('emps','')}

Name	User Name
${DisplayName}	${emps.UserName}

and this is what I have in Group By field

${AlertUtils.payRep(emps.PersonId).WorkEmail}

When I run the alert it doesnt work and errors out with below message

Exception when sending message for recipient Id : 300000063600162