Hi @Gaureshk_Kodag  Thanks for your response. I know there is the Exclusion tab. But it can add one rule ONLY for each exclusion. I'd like to group more selection rules for an exclusion. That's why I switch to "Advanced Search" interface. 

Hi @kchaitanya, thank you for your correction. Yes, the slots filled by backup recommendation should come with Criteria results. I forgot this. The interface has already told this. I've modified the diagram below. It may help if some people have a similar question.    

Hi @kchaitanya, Thank you so much for clarifying the "Favorite Category," which is handled by Target Recommendations at the backend. And point out the approach of a custom key if needed to specify the behavior.It helps me to figure out the logic behind the official document. Thank you again.

Hi @kchaitanya, Thank you for your information. May I explore more about this approach? The document mentions that "When this option is selected, the entity.categoryId value must be passed as a parameter to the display mbox." Do you know when / where to pass it? Does it mean setting a Launch rule to...

Hi @mosesmaxen, thank you for the clarification. These two statements help me a lot to know the logic behind them.user.XXX represents a Target profile script, which is a way to track behavioral data using code executed on Target's server-side on each mbox / location request. profile.XXX represents a...

Hi @mosesmaxen, thanks for your prompt response and pointing out the document linkage. The document only shows a custom key that can be added when creating a new Criteria. It's not a setting step from the "Settings" interface.  Supposedly, I need to configure a new custom attribute first. Then, I co...

Each item type (ex. article or product) have their own feed and entity.id position. For example, feed A for "Article" item type with pre-fix like "article-12345" in entity.id field.And another feed B for "Product" item type with pre-fix like "prod-12345" in the entity.id field. That means there is n...