Groovy script for request creation not working

Summary:

Content (please ensure you mask any confidential information):

I am trying to set up a notification in the HR Help desk for Redwood once a request has been created. The notification should be sent to the Primary point of Contact and Agent. The bell and email notifications are failing. Can you please help me ensure my script is correct. I have also set the Trigger to 'Create'

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):

try {
def recipientPartyId = PrimaryContactPartyId;
def messageText = "Your request (SR" + SrNumber + " - " + Title + ") has been successfully submitted.";