Finding and your answer
Expose Ledger.JournalSource
Partial match
99%
How the model read it
A consultant evidence page states that Ledger.JournalSource is available in the governed ledger export at entry grain, but the audited Ledger table has only DateKey, AccountKey, SignedAmount, and IsAdjustment. Thus source support exists while current-model implementation was not observed.
Workbook evidence
Cited current gold
Open questions
Is JournalSource approved for addition to the target semantic model?
What source values constitute manual journals?
Who owns value-domain governance and mapping changes?