The position of the Catholic Church is slightly different. Whilst it does recognise the validity of the orders of certain groups which separated from communion with Holy See. The Holy See accepts as valid the ordinations of the Old Catholics in communion with Utrecht, as well as the Polish National Catholic Church (which received its orders directly from Utrecht, and was—until recently—part of that communion); but Catholicism does not recognise the orders of any group whose teaching is at variance with what they consider the core tenets of Christianity; this is the case even though the clergy of the Independent Catholic groups may use the proper ordination ritual. There are also other reasons why the Holy See does not recognise the validity of the orders of the Independent clergy: