Pitra Dosh Nivaran
Pitras are our own ancestors who have been thrown into Pretha yonior any other lokas and asa result of this they become extremely restless and sad and expect to get mukti from that state through the karma of their successors they are considered to be more important to a person than any other devathaas(excluding sadguru) as they will be having blood relationship with their successors.
They are considered equal to Gods. as this body ours has come into existence because of our ancestors, pitra dosha nivaran is consideredto be a very important duty of a person. if the pitras are satisfied and happy with ur shraddha(actions offered with shraddha) they canbring joy and clear ur path to success in all spheres.
There are many rituals of Pitra Dosha Nivaran. Titr dosh is one of the biggest obstacle on the path to siddhi. Success is almost not possibleif one has pitra dosh in ones life. Pitra Dosh is not a curse of the Ancestors for sure as the horoscope of a person is drawn and decided rightat the time of his birth and accordingly any kind of defects are decided at the time of his birth which would include defects like Pitra Dosh.