I got an email from NetSuite Alerts:

please refer to the following page in Help Center: SuiteFlow (Workflow) > Testing and Troubleshooting Workflows > Viewing Workflow Activity > Error Handling for Scheduled Workflows

. What help center are they referring to? I've been doing this for almost a year and this is a new one. There is no such center under Centers and Tabs, and I don't think it's referring to SuiteAnswers.