Canon 1386

1. The libellus attacking the validity of sacred ordination

must be sent to the competent dicastery of the Roman Curia which

will determine whether the case is to be handled by it or by a

tribunal designated by it. 2. If the dicastery remands the

case to a tribunal, the canons on trials in general and on the

ordinary contentious trial are to be observed unless the nature

of the matter precludes this; the canons on the summary contentious process cannot, however, be used. 3. Once the libellus

is sent, the cleric is forbidden to exercise orders by the law

itself.