Explanation
To build the required sharing model for sensitive deal data, the consultant should use the Financial Deal object to capture the deal data and use restriction rules to block user access above the banking associate in the Role Hierarchy. The Financial Deal object is a custom object in Financial Services Cloud that allows you to track and manage complex deals that involve multiple parties, products, and stages. You can use the Financial Deal object to store sensitive deal information, such as deal name, amount, status, or participants. You can also use restriction rules to limit the visibility of Financial Deal records based on criteria such as role, profile, or ownership. Restriction rules can override the organization-wide default sharing settings and block user access to records that they would otherwise be able to see through the Role Hierarchy or other sharing mechanisms.
Verified References: : Salesforce Help Article 1 : Salesforce Help Article 2