Everything gets audited
ITRP automatically tracks all changes to all your data. You can always find who entered some information in a record and when this was done. There is no way anyone could have manipulated this data because the ITRP roles (i.e. the access profiles) do not provide such access.
This means that auditors can trust the data they find in the audit trials. Each record has its own audit trail. You can even use the complete log of all audit trails to get an overview of the sequence of events during a specific period.
Give your auditors access
Provide your auditors direct access to all your data by giving them the Auditor role. People with this role can view all your data but they can not change anything.