What does a ruleset version refer to in Pega?

A ruleset version in Pega is essentially a subset of a ruleset that groups related versions of rules together. When changes are made to rules, a new version of the ruleset can be created to reflect those updates while maintaining the earlier versions for reference or rollback as necessary. This allows for effective version control and management of different rule implementations within the same ruleset. By having multiple versions, teams can work on enhancements or fixes without disrupting the current production environment. This concept of versioning is crucial in environments where rules are frequently modified or extended, enabling a smooth transition between different states of rule definitions while ensuring stability and operability in applications using those rules.

In contrast, the other options do not accurately capture the essence of a ruleset version. A ruleset refers to a collection of related rules but does not specifically address the version aspect. A unique implementation of a rule pertains to a specific instance rather than the set of possible versions. Finally, a sequence of case interactions describes the lifecycle of a case, which is distinct from the versioning of ruleset definitions.