1. A verification activity is dragged into the workflow between the step with the Import activity and the step with the SQL Query activity.
2. The marketer sets the verification activity to monitor the Import's destination data extension. If the import into the data extension results in a record count that is less than 500, the activity stops the automation and sends the marketer an email notification.
3. When this unexpected scenario occurs, Marketing Cloud stops the automation before the segmentation occurs and prevents the message from sending to the incorrect audience. The marketer can promptly act to correct the file and rerun the automation as intended.