@Jon_Tehero Thank you for the quick response. I modified the profile
attribute as shown in the article.Now,user.lastViewedTenSubCategories =
["abc","xyz"]As per the inclusion rule, it should display all the items
that belong to sub-category "abc" or "xyz" but it only displays items
that belong to sub-category "abc" which is the sub category of the item
I am using as my recommendation key. Looking at the trace output, I can
see the following inside "inclusionrules":{ "attribute" :
"subCategory1",...