Tell me about a time when tax is filed with incomplete support or wrong period. What did you do?

I first confirmed the facts and contained the immediate impact. Next, I reviewed the tax report, invoices, ledger, return, and payment evidence and coordinated the action to verify tax base, rate, document, filing period, and reconciliation to the ledger. After verifying the result, I summarized the root cause, preventive control, owner, and follow-up plan so the issue would not recur.