If, in managing or executing the prefectural governor's affairs, the prefectural governor becomes aware that there is an omission, erroneous entry, clerical error, or omission in an entry in a family register supplement kept by a municipality within the area of the prefecture, the prefectural governor must promptly notify the mayor of the municipality to that effect.

If, in managing or executing its affairs, the commission of the municipality finds that there is an omission, erroneous entry, clerical error, or omission in an entry in a family register supplement, the commission must promptly notify the mayor of the municipality to that effect.

①If the mayor of the municipality becomes aware that there is an omission, erroneous entry, clerical error, or omission in an entry in a family register supplement, through managing and executing the mayor's affairs, or through a notice or notification under Article 17-2, paragraph (2) or the preceding two Articles, the mayor must take the measures necessary to ensure the accurate recording of the family register supplement, including confirmation with the mayor of the municipality of the address.

②If a person recorded on a family register supplement becomes aware that there is a clerical error or omission in an entry in the family register supplement pertaining to the person or the person's spouse, lineal ascendant, or lineal descendant, the person may notify the mayor of the municipality that keeps the family register supplement on which that person is recorded, to that effect.

①If the mayor of the municipality has deleted a family register supplement in full, or has remade a family register supplement, the mayor must file the deleted family register supplement or the family register supplement before the remaking (collectively referred to below as a "removed family register supplement") and preserve it as a file of removed family register supplements.

②For a municipality that prepares a family register supplement using a magnetic disk under Article 16, paragraph (2), the municipality may accumulate the removed family register supplements prepared using a magnetic disk, and treat them as a file of removed family register supplements.

On a removed family register supplement, in addition to the matters that had been recorded on the family register supplement pertaining to that removed family register supplement, an entry must be made stating that the family register supplement has been deleted and the date of the deletion, or that it has been remade and the date of the remaking (for a removed family register supplement prepared using a magnetic disk under paragraph (2) of the preceding Article, a record must be made instead of an entry; the same applies below).

①A person recorded on a removed family register supplement preserved by a municipality, or that person's spouse, lineal ascendant, or lineal descendant, may request the mayor of the municipality to issue a copy of the removed family register supplement pertaining to those persons (for a municipality that prepares a removed family register supplement using a magnetic disk under Article 21, paragraph (2), a document stating the matters recorded on that removed family register supplement; the same applies in the following paragraph, paragraph (3), and Article 46, item (ii)).

②If it is necessary for the performance of affairs specified by laws and regulations, the State or an organ of a local government may request the mayor of the municipality to issue a copy of the removed family register supplement preserved by that municipality, which omits the statement of the matters listed in Article 17, item (vii).

③In addition to what is provided for in the preceding two paragraphs, if a person listed in the following items makes a request stating that, with respect to a removed family register supplement preserved by the municipality, a copy of the removed family register supplement showing only the matters listed in Article 17, items (ii) through (vi) is necessary, and the mayor of the municipality finds the request to be reasonable, the mayor may issue that copy of the removed family register supplement to the person making the request.

④In addition to what is provided for in the preceding three paragraphs, when a specified mandated professional prescribed in Article 12-3, paragraph (3) makes an application to the effect that a copy of a removed family register supplement prescribed in that paragraph is necessary, on the ground that the client of a case or affairs entrusted to the professional falls under a person listed in any of the items of the preceding paragraph, and the mayor of the municipality finds the application to be reasonable, the mayor of the municipality may issue a copy of a removed family register supplement kept by the relevant municipality to that specified mandated professional.