@JanakideviGazula Yes, you can suppress an action based on the treatment and placement in Pega Customer Decision Hub using suppression rules or audience criteria. For example, if a certain treatment (like a specific email or offer) has already been shown to the customer in a particular placement (like web or mobile), you can use conditions in the engagement policy or contact policy rules to prevent that action from being repeated. You can define these rules in the Next-Best-Action Designer, under Suppression settings, by referencing either the combination of treatment and placement directly or indirectly through custom attributes. This helps to ensure a better customer experience by avoiding repetitive or irrelevant messaging. Make sure your interaction history and context data are properly tracked to apply such suppression accurately.