omission from a list or record
Refers to an item or entry that was accidentally left out of a document, list, register, or database.
There was an omission in the report.
We double-checked to prevent omissions from the roster.
漏れ alone can mean leakage or omission in various contexts; 記載漏れ narrows it to written records.
Compound of 記載 (listing, recording) and 漏れ (omission, leakage).