To comply with legislation and planning policy, a GTAA must be agreed by Welsh Ministers by the deposit stage and cover the full plan period (2018-2033).
Er mwyn cydymffurfio â deddfwriaeth a pholisi cynllunio, rhaid i Weinidogion Cymru gytuno ar GTAA erbyn y cam adneuo ac ymdrin â chyfnod llawn y cynllun (2018-2033).