(1) Manglik Dosha, Kalsarpa Yoga, Grahan Dosha, Pitru Dosha in Birth Horoscope
(2) Birth in negative & malefic Nakshatra or Yoga like vatipat, vaidhryti, jeshta, mool, vishkumbha etc.
(3) If the 7th hose’s lord is week in birth horoscope (Marriage responsible planet as per birth horoscope)
(4) For male : if the Venus (Sukra) is week in birth horoscope
(5) For female : if the Jupiter (Guru/Brihaspati) is week in birth horoscope
(6) Negative & malefic star aspected or posited in 2nd , 7th & 12th house of horoscope
(7) Negative & malefic stars associated in birth horoscope