Hi @AbhishekC1725, Please find the below URL which gives an explanation about pxResults property.

https://community.pega.com/sites/pdn.pega.com/files/help_v73/zstandardrules/rule-obj-propertycode-pega-list.htm

@AbhishekC1725 

Firstly, Page List and ValueList is property types such as for example Page, Single Property, Page Group, etc. You can create property any type applies to any class, for example @baseclass.

Code-Pega-List is class. Class consist of several properties any types (Page, Page List, etc.). You can open class Code-Pega-List in application explorer and see it.

pxResults is a Page List type property of Code-Pega-List class.

Code-Pega-List is a core class for Pega Platform. Many rules used it, such as methods in activity rule (Obj-Browse), report definition rule, etc. This class contains standard logic, for example count of elements in page-list contain in property .pxResults. I think that my answer help you understand.

and coming to your question: Where we use this? Its importance in pega.

There are a number of functions, activity-methods (obj-browse being a popular one!) and functions that return Code-Pega-Lists.  Here is what is useful to know about them:

1) The actual elements in the list are within the .pxResults list within the page whose class is Code-Pega-List.

2) Often (but not always!), the number of elements available in .pxResults is stored in another property called .pxResultCount.

@AbhishekC1725  In brief, it represents array (infinite) of records.

For eg: we want to get list of employees who completed 5 years in an organization  for sending an mail.

We could use a temp page FifthAnnEmployees to be used by the report definition which fetches employees who joined 5 years from now.  Report definition would run the query & put SQL results to FifthAnnEmployees.pxResults list