Significant changes to the content of outputs must only be done on the basis of user needs, and after discussions with them, whilst ensuring that accessibility standards are still met.
Sicrhau llinell sylfaen o ran niferoedd y cwynion mewn perthynas â diffyg darpariaeth, a’u natur, fel y gellir eu cymharu â’r newidiadau yr anelir atynt.