Rollup By Lookup aggregates Financial Services data into higher-level summaries. A typical use case is calculating financial-account measures such as account balances and presenting those totals at the individual client or household or group level.
When a Financial Account or Primary Group membership changes, the RBL configuration updates the corresponding client-level and group-level summaries. This allows advisors and bankers to view aggregated financial information without manually totaling every related record.
Salesforce provides packaged RBL configurations for multiple Financial Services objects, including Assets and Liabilities, Claims, Financial Accounts, Financial Account Roles, Insurance Policies, and Revenues. Household RBL rules use household lookups, while client-level financial-account rules use owner-related lookup fields.
Salesforce also warns that creation or customization of the managed-package Financial Services RBL rules is not recommended or supported. This makes statement D correct.
Person Accounts are not an absolute prerequisite for the RBL framework, so statement B is incorrect. RBL also performs aggregate calculations and can create meaningful processing overhead, particularly during high-volume data loads, so statement E is inaccurate.
Therefore, the technically correct statements are that RBL displays summary calculations, updates corresponding client and group summaries, and should not be custom-created or modified outside supported guidance.