.@raviizhere asked for my views on Pitra Dosha.
Many astrologers classify it only as a made-up Dosha like Kal Sarp Yog. As per me, if any astrologer, however reputed, holds Pitra Dosh in your chart responsible for your problems, then first thing you do is change astrologer.
Watch this video of Swargiya Shri Joshi Ji where he explains in simple terms as to why should one not even bother about Pitra Dosha in chart, and should concentrate on finding root cause of the problems. There's a lot more to speak than this video.
Astrologers who believe in it would justify it like Kal Sarp Dosh. People spend hefty amount to cure Pitra Dosha but there is no need of remedy for an imaginary Dosha. Even if remedy is free, one should spend time in doing remedy that would actually solve/ease problems. JSR.