Sometimes a table associated to a given Transaction has more attributes than those specified in the Transaction structure. This happens when you have what is called "Parallel Transactions". Parallel Transactions are two or more Transactions having the same underlying table.
Say, for example, that a Knowledge Base has the following Transactions and only the CustomerBaseInformation Transaction has the Has Audit property set to true.
The Audit not referenced attributes lets you decide if CustomerPassword and CustomerAnswerSecQuestion, that are not referenced in CustomerBaseInformation Transaction but are stored in the underlying table, are audited or not.
|Audit all attributes
||All attributes of a Transaction's underlying levels tables are audited.
|Audit referenced attributes only
||Only attributes referenced in Transactions are audited.
If the value of this property is 'Audit referenced attributes only', only referenced attributes are audited, no matter what is the value of the Audit Attribute property they have.