LEGAL PROFESSION ACT 2007 - SECT 550 Defect in relation to a warrant LEGAL PROFESSION ACT 2007 - SECT 550 Defect in relation to a warrant 550 Defect in relation to a warrant (1) A warrant is not invalidated by a defect in the warrant or in compliance with section 547 , 548 or 549 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 549 (5) .