Finding and your answer
Ledger.SignedAmount column (Decimal)
Direct match
98%
How the model read it
Current gold observes the qualified column `Ledger.SignedAmount` as Decimal. The prototype provides reporting-sign context, but value-level currency and sign conformance were not established by the bounded evidence.
Workbook evidence
Cited current gold
Open questions
Confirm that the current column is consistently expressed in the required reporting currency and reporting-sign convention.