To ensure that every attempt by a developer to check a rule into a certain ruleset version is reviewed before that rule is allowed to be checked in:

C. Override the FindReviewers decision tree to invoke a when rule that evaluates the criteria, if the when rule returns true, the decision tree returns SendBack.

By overriding the FindReviewers decision tree and incorporating a when rule, you can enforce criteria such as complete history tab fields and justified warnings. If the criteria are not met, the decision tree returns SendBack, preventing the rule from being checked in.

References:

Pega Documentation on Rule Check-In: Rule Check-In

Pega Documentation on Decision Trees: Decision Trees