to respond to decisions of the courts/tribunals which affect or may affect the operation of the Welsh Tax Acts, or any regulations made under them.
i ymateb i benderfyniadau'r llysoedd/tribiwnlysoedd sy'n effeithio ar weithrediad Deddfau Trethi Cymru, neu a allai effeithio arnynt, neu unrhyw reoliadau a wneir oddi tanynt.