Recently, I ran into a strange issue in ServiceNow — for a single update, the system was sending duplicate notifications. At first, it looked like a notification configuration problem, but after digging deeper, the real culprit was unexpected: multiple current.update() calls triggering the same logic repeatedly. This wasn’t just a one-off mistake — I’ve seen this pattern quite often, where developers use current.update() without fully understanding its impact. Even worse, many assume using it in an after Business Rule is safe, which is not true. That experience pushed me to break this down clearly, because this is one of those small things in ServiceNow that can quietly create big problems if handled the wrong way.