What does a successful update of the current pattern require?

A successful update of the current pattern in ServiceNow Discovery requires saving and publishing the pattern. When you create or modify a pattern, it's essential to save those changes to ensure that they are recognized by the system. Publishing the pattern makes it active, allowing the system to utilize the updates in active discovery processes.

The process of saving ensures that your adjustments to the pattern are retained, while publishing indicates that these updates are now effective. This is crucial for ensuring that the Discovery process works with the latest changes, enhancing the discovery of configuration items as per the updated logic of the pattern.

While other options may seem relevant in different contexts of software development or project management—rollback, user confirmation, and variable testing do not specifically relate to the act of updating and activating a pattern within the ServiceNow environment in the same direct manner as saving and publishing.