At the end of June 2019, Cwm Taf Morgannwg advised the Welsh Government that they thought there was an issue with the reporting of certain RTT waiting lists.
Gwelsom fod rhai cynrychiolwyr yn dewis yr opsiwn anghywir ar gyfer trafodiadau cyfradd uwch ar ein system rheoli trethi wrth ffeilio ffurflenni treth.