Is it mandatory for a Roman Catholic girl to convert to Syrian Orthodox if the boy is of the Syrian Orthodox church, in the case of marriage? If a woman is Roman Catholic, and a man is from Kerala, from the Malankara Orthodox Syrian church, and they wish to marry, does the woman need to convert to Syrian Orthodoxy?  According to the Syrian Orthodox church, can she marry him while remaining a Roman Catholic and planning to raise their children as Catholics?
According to the Catholic Church's canon law on mixed marriages,


  1983 Can. 1124 Without express permission of the competent authority, a marriage is prohibited between two baptized persons of whom one is baptized in the Catholic Church or received into it after baptism and the other of whom is enrolled in a Church or ecclesial community not in full communion with the Catholic Church.


The Syrian Orthodox are not in communion with the Catholic Church, since the latter considers them schismatic.

According to the Syrian's norms,


  The liturgical minister should be the parish priest of the church where the marriage is celebrated, or his delegate from the same ecclesial communion.


and


  There is to be no joint celebration of marriage by the ministers of both Churches.


and


  Syrian Orthodox partner is to be reminded that he or she has to commit him/herself to imparting to their children proper Orthodox formation, to the extent possible and in agreement with his/her partner.


According to Catholic canon law, the first two points are possible, provided it is a Catholic priest and Catholic church. The last point is even more explicitly rejected in the older, 1917 formulation of Can. 1124 cited above:


  1917 Can. 1060 Most severely does the Church prohibit everywhere that marriage be entered into by two baptized persons, one of whom is Catholic, and the other belonging to a heretical or schismatic sect; indeed, if there is a danger of perversion to the Catholic spouse and children, that marriage is forbidden even by divine law.


Also, regarding baptism, the Catholic Church requires that


  Can.  868 §1. … 2/ there must be a founded hope that the infant will be brought up in the Catholic religion…


Thus, although certain things may be permissible on the side of the Syrians, the Catholic Church is very cautious regarding mixed marriages, as they can be very spiritually dangerous to all those involved.