branch number; classification number
Used in administrative contexts such as land registration, document numbering, or organizational codes to indicate a sub-number or branch identifier appended to a main number.
In the land registry, a lot number may have a branch number appended.
Please write the number on this document accurately, including the branch number.
Compound of 枝 (eda, 'branch') and 番 (ban, 'number'), referring to a branching sub-number.