Explanation
You can enable expense auditors to audit expense reports for specific business units by assigning them specific expense auditor data roles for the business units. For example,to allow an expense auditor to audit expense reports for the Vision Operations and Vision Services business units, assign the Expense Auditor Vision Operations and Expense Auditor Vision Services data roles, respectively, to the expense auditor.
References:https://docs.oracle.com/cloud/farel8/financialscs_gs/FAWDE/F1005004AN1204B.htm