Named Lists

Named lists are reusable client-scoped collections of values that can be referenced from Decision Engine rules. They are intended for data that changes more frequently than the rule logic itself, such as blocked merchant names, MCC lists, country lists, or wildcard patterns.

Use named lists when:

• the rule logic is stable but the match set changes often
• multiple rules need to reference the same dataset operations
• teams need to update values without rewriting rule predicates

Do not use named lists when:

• you need numeric thresholds or ranges
• you need arbitrary structured objects