Error while configuring SmtpRecipients for ntfr resource

I want to configure the SmtpRecipients for ntfr resource in VCS.

Please be noted that for email ID abc@xyz.com i want to configure  for Error and Warning alerts and for def@xyz.com i want to configure for Error. I am using below command but getting the error V-16-1-10428 Incorrect association for SmtpRecipients

# /opt/VRTS/bin/hares -modify ntfr SmtpRecipients "abc@xyz.com" Warning "def@xyz.com" Error "abc@xyz.com" Error

VCS WARNING V-16-1-10428 Incorrect association for SmtpRecipients

Could you please help me with correct syntax