Issue  

The Group by feature in Constellation grid displays fewer results than expected or returns blank values when the data source is a parameterized data page.  

Steps to reproduce  

1. Create a List type view sourced from a parameterized data page.  

2. At runtime, apply a Group by condition to the list.  

  Root Cause   

  The following API calls must be invoked for the Group by feature to work correctly:  

•  Total Count API  
•  Group by API  
•  Data Retrieval API   

The issue occurs because Data Retrieval API call, which is necessary to fetch complete results, is not triggered when using the Group by functionality with a parameterized data page.  

Refer to the following images for a comparison of the working and non-working scenarios:  

Working scenario: 

Non-working scenario:

  
 Solution  

This issue is identified as a bug and has been fixed in the DXAPI calls from C11n of Pega Infinity™ '24.2.