To apply a User Update Rule to existing users in Saviynt, you should enable the option B. Retrofit rule actions for users. Here's an explanation:
* Saviynt's User Update Rules - Initial Application: When a User Update Rule is created, it typically applies to users who are newly created or updated after the rule is put in place.
* Retrofit Functionality: The "Retrofit rule actions for users" option allows you to apply the rule retroactively to users who already exist in the system and meet the rule's conditions.
* How it Works: When enabled, Saviynt will evaluate the rule against all existing users. If a user matches the rule's conditions, the defined actions (e.g., assigning roles, updating attributes) will be applied to that user, even if they were created before the rule.
* Use Cases: This is useful when you create a new rule that should have been in place all along, or when you need to make a broad change to existing user configurations based on a new policy.
* Other Options:
* A. Trigger when user is created from import: This applies the rule to new users imported into Saviynt, not existing users.
* C. Trigger when user is updated from import: This applies the rule when existing users are updated via import, but it won't necessarily apply to all existing users who meet the conditions.
* D. Action > Rerun All Provisioning Rules: This action is more general and might not be the most efficient way to apply a specific User Update Rule retroactively.
In summary: The "Retrofit rule actions for users" setting within a Saviynt User Update Rule is crucial for applying the rule's logic and actions to existing users, ensuring consistent configuration across the user base.