The Operational Management Procedure currently used to set South African sardine and anchovy total allowable catches and sardine bycatches, OMP-04, was revised in early 2005. This was in response to a Supreme Court of Appeal ruling which referred the matter of the distribution of the pelagic TAC for the 2005 season back to the Department for fresh determination. This document details the modifications made to OMP-04 and provides the science behind the revision. It should be read in conjunction with Cunningham and Butterworth (2004a), which detailed OMP-04 as agreed by the Marine and Coastal Management Pelagic Working Group in June 2004, and Cunningham and Butterworth (2004b) which contains the finalised rules governing exceptional circumstances.