Section 13 specifies the Welsh Ministers must provide a report on the operation and effect of the Act within three years of the Act receiving Royal Assent (30 July 2017).
Mae adran 13 yn pennu bod rhaid i Weinidogion Cymru ddarparu adroddiad ar weithrediad ac effaith y Ddeddf o fewn tair blynedd ar ôl i'r Ddeddf gael Cydsyniad Brenhinol (30 Gorffennaf 2017).