Finding and your answer
Ledger.SignedAmount column
Direct match
97%
How the model read it
The authoritative register requires a Decimal Ledger.SignedAmount in reporting-sign convention. Current gold observes the exact Decimal column. The audit confirms structure and formatting, but not source currency conversion logic or detailed sign semantics.
Workbook evidence
Cited current gold
Open questions
Is SignedAmount already converted into a single reporting currency, and what conversion-rate/date rules are intended when CurrencyCode is added?
Is the workbook's positive-revenue/negative-expense sign convention the required production convention?