What condition discovered during ADDI analysis should trigger an Optimize phase before Refactoring begins?

Think of it like working hands-on with IBM mainframe systems — the answer here is 'The existence of any COBOL program with more than 500 lines of code'. Significant dead code, duplicated logic, or overly complex programs signal that optimization investment is needed first, because transforming bloated COBOL directly into Java perpetuates the same qual. On real mainframe exams, this concept comes up repeatedly so make sure you have it locked in.