What should I do if the house invoice and deed tax ticket are gone? Where can I consult?

1, take the recorded transaction contract to the real estate transaction department to copy the deed tax for bookkeeping, and affix the official seal or special seal of the collection unit; Copy the purchase invoice to the sales unit and affix the official seal or financial seal of the sales unit. Please note that the chapters on the document must be the same as those on the original document. 2. The invoice cannot be reissued.