Canon 1639

Can. 1639 §1. Without prejudice to the prescript of can. 1680 §4, a new cause for petitioning cannot be admitted at the appellate grade, not even by way of useful accumulation; consequently, the joinder of the issue can only address whether the prior sentence is to be confirmed or revised either totally or partially.

Can. 1639 §2. New proofs, however, are admitted only according to the norm of can. 1600.