How can we do comparison of 2 product/packages and get report which can showcase differences for all rules with prior version? How we can get difference report in PEGA which can showcase what change we have done in rule as compared to previous[ADD/MODIFY/DELETE]?
We have checked CompareRules but it does comparison rule wise and it shows differences based on PEGA fields which is not easy from readability perspective.
Data Transform and Activity rule has Compare option in rule itself but that is also rule level and this feature is not available for other rules.
As far as I know there is no functionality present in Pega to compare RAP files. Rules can be compared only by checking Compare With.. from the Actions tab of the concerned rule.
I believe, there is no feature to compare the Product files and list down the rules modified, added, etc..
I hope this should be part of your process in the development cycle (design document for each user story on the rule changes made). The Release Admin can consolidate all the rules made for each release and document them in the release notes for tracking purposes.
@Abhay Kumar Alandkar model comparison is difficult to show and is implemented for specific rules that have a simpler data model - you have also a low level activity pxComparePages - see Using Comparepages | Support Center
If this is important for your process, you can certainly build such capability. the healthcare foundation framework has for example build their own compare utility Pegasystems Documentation