Assemble: photo timeline, COC, permit copy, and third-party test reports that contradict the observation. File through the same portal channel, not a generic e-mail, unless the notice provides one.

If a payment plan is offered, capture the case ID and keep banking references per instalment. Never assume SMS confirmation equals ledger posting.

For repeat observations on the same system, show corrective maintenance SOP, not a one-time contractor invoice only.