1990 or so, the names of two people on the rural real estate license were secretly removed without knowing it. What should I do?

Then you can only issue real estate licenses to this family. The government department filed an administrative lawsuit. Let the department that issued the real estate license. Explain why your name is missing. Then let them reissue a real estate license. Sister, cancel the previous real estate license. Revoke their original administrative behavior and make a new real estate license, a new administrative behavior.