FilingLens source comparison checklist
Public guide: https://filinglens.agiscorecard.com/sec-companyfacts-period-matching

Record: source retrieval time, numeric CIK, concept, exact start/end dates, unit, earlier and later filing cutoffs.
Keep both values, filing dates, forms and accession links.
Missing data is not zero. Conflicting same-day values remain ambiguous.
A difference does not identify a restatement or its cause.
Open original filings before explaining a change. Not investment advice or a trading signal.