Resolve Error: “An unexpected SuiteScript error has occurred.” while using Send Email Action of Workflows

Scenario:

If the error “An unexpected SuiteScript error has occurred.” is encountered when saving a record that has a workflow running on it, check the workflow for any Send Email action. 

When adding a Send Email action on a workflow, there should always be a condition to check for both sender’s and recipient’s email address availability.

Solution:

1. Navigate to Customization > Workflow > Workflows
2. Workflow: Click Edit
3. Double-click the State that contains the Send Email action
4. Click Send Email 
5. Condition:
   • Use: Select Visual Builder
   • Workflow Condition Builder: 
     • Record: Select the record selected under the Record (Join Field) for both the Sender and the Recipient
       Note: When a Specific Sender or Recipient is set, the record type of the Sender or Recipient should be selected instead.
     • Field: Select E-mail
     • Compare Type: Select not Empty
     • Click Save
6. Click Save