Canon 1436

1. One who denies a truth which must be believed with divine

and catholic faith, or who calls it into doubt, or who totally

repudiates the Christian faith, and does not retract it after

having been legitimately warned, is to be punished as a heretic

or an apostate with a major excommunication; a cleric moreover

can be punished with other penalties, not excluding deposition.

2. In addition to these cases, whoever professes a doctrine

that has been condemned as erroneous by the Roman Pontiff or the

college of bishops exercising the authentic magisterium, and does

not retract it after having been legitimately warned, is to be

punished with an appropriate penalty.