After an organisation has received a compliance notice, it may challenge and appeal the requirement to comply with a standard if it does not agree that the duty is reasonable and proportionate.
Ar ôl i sefydliad dderbyn Hysbysiad Cydymffurfio, mae gan y sefydliad hawl i herio'r angen i gydymffurfio â safon i’r Comisiynydd os nad yw’n cytuno bod dyletswydd yn rhesymol a chymesur.