A city cemetery-plot system asks an LLM to sequence staff effort. The reply treats “engraving takes two days” as a reason to skip the legal-hold check that must run first. Which defect is shown?

When a city cemetery-plot system asks an LLM to sequence staff effort and the reply treats “engraving takes two days” as a reason to skip the legal-hold check that must run first, the defect is a reasoning error in planning and prioritization of test or work steps. Civic burial administration cannot let duration excuses bypass mandatory legal gates that protect the public record. A hallucination inventing a plot type absent from inventory fails when the stem’s defect is mis-prioritization of real steps, not inventing a plot type. Bias that only uses one alphabet for locker IDs fails as unrelated representation skew. Non-determinism from maximum temperature fails as the defining label for a specific priority mistake. Exam caveat: skipping a required prerequisite because another task is long is planning/reasoning failure. Operational check: validate GenAI work orders against the legal-hold SOP, refuse sequences that skip civic holds, encode mandatory gates in the prompt, and require plot-office sign-off before staff follow the plan. Retain the municipal audit note so later testers can see why the decision protects public service quality and fairness. Retain the municipal audit note so later testers can see why the decision protects public service quality and fairness.