In traditional marriage matching, 10 poruthams are usually checked to understand the compatibility between the bride and groom. These matchings are calculated using the birth stars of both individuals. In some cases, if Mahendra Porutham does not match, astrologers may check two additional factors called Mara Porutham and Paal Porutham. Because of this, sometimes the total compatibility checks can become 12 poruthams instead of the usual ten.