Tell me about a time when system errors or incorrect master data create repeated accounting issues. What did you do?

I first confirmed the facts and contained the immediate impact. Next, I reviewed the system log, master data approval, interface report, and test result and coordinated the action to verify master data, posting logic, interface, authorization, and error handling. After verifying the result, I summarized the root cause, preventive control, owner, and follow-up plan so the issue would not recur.