WATER SUPPLY (SAFETY AND RELIABILITY) ACT 2008 - SECT 417 Defect in relation to a warrant WATER SUPPLY (SAFETY AND RELIABILITY) ACT 2008 - SECT 417 Defect in relation to a warrant 417 Defect in relation to a warrant (1) A warrant is not invalidated by a defect in the warrant, or in compliance with section 414 , 415 or 416 , unless the defect affects the substance of the warrant in a material particular. (2) In this section— "warrant" includes a duplicate warrant mentioned in section 416 (5) .