What is the primary goal of copybook optimization in the Optimize phase?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'To convert all copybooks to COBOL-85 syntax for compatibility with the current Enterprise COBOL compiler'. Copybook optimization reduces the number of distinct data structure definitions by merging redundant ones, directly reducing the number of Java classes wca4z must generate and the ongoing maintenance . On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.