O dan adran 23 o'r Ddeddf, mae Gweinidogion Cymru ac Ysgrifennydd Gwladol Cymru'n adrodd yn flynyddol ar y cynnydd a wnaed o ran gwireddu’r darpariaethau o dan Ran 2, hyd at flwyddyn ar ôl i'r darpariaethau terfynol gael eu rhoi ar waith.
Under section 23 of the Act, Welsh Ministers and the Secretary of State for Wales report every year about the progress made to put into effect the provisions under Part 2, until the first anniversary after the final provisions have been implemented.