Which objects to use for a custom audit model of Supplier Bank Account and Supplier by the same user

Summary: Identify supplier bank accounts created or updated for a specified time frame by the same user who created or updated the corresponding supplier or supplier site

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PROBLEM: Requirement to create a mitigating control that will monitor incidents related to Access Control 5985: Create Suppliers and Maintain Supplier Bank Accounts. We have one user that manages supplier bank accounts but due to a technical limitation we had to leave access to manage supplier site privilege in the role that user has. Therefore, we want to monitor incidents where this condition is met.

SOLUTION: I attempted to include in the model the following business objects Audit - Supplier Bank Accounts, Audit - Supplier and Audit - Supplier Sites. However, doing this results in the following warning message "At least one object in this model isn't related to others. The model may return incomplete results. (GTG-3660251) Details: Objects that are related to one another include: . Do you want to continue?"