1. A geographic or administrative area where official documentation, registration, or record-keeping is deficient or lacking in completeness
The census identified several zonas de registros incompletos in remote rural areas.
O censo identificou várias zonas de registros incompletos em áreas rurais remotas.
2. A region where vital records, property deeds, or official documents are missing, damaged, or inadequately maintained
Genealogical research was difficult due to the zona de registros incompletos in that municipality.
A pesquisa genealógica foi difícil devido à zona de registros incompletos naquele município.