254.    Defect does not affect validity

 

(1)     A notice of assessment or other notice or document issued to a person under a tax Act is not to be considered invalid or ineffective by reason of a failure to comply with the requirements of section 251 or 252 if the person had effective knowledge of the fact of the notice or document and of its content.

 

(2)     A notice of assessment or other notice or document issued under a tax Act is not to be considered invalid or ineffective by reason of defects if it is, in substance and effect, in conformity with this Act, and the person assessed or affected by the notice or document is designated in it according to common understanding.