Finding and your answer
Ledger.CurrencyCode column
Not found in this gold boundary
99%
How the model read it
The authoritative register requires an ISO transaction CurrencyCode for transaction-currency analysis, and working sheets illustrate AUD/NZD codes. No CurrencyCode object is present in the audited Ledger inventory in available current gold.
Workbook evidence
Cited current gold
Open questions
Is transaction currency available on every posting in the finance source?
Are transaction amount, reporting amount and exchange-rate fields also needed to make transaction-currency analysis meaningful?
Should CurrencyCode link to a governed currency dimension?