No. BeanShell rules are not required to implement aggregation in SailPoint IdentityIQ. Aggregation is a standard IdentityIQ function performed through an application definition, connector configuration, schema definition, correlation settings, and aggregation task execution. Many common connectors can aggregate accounts and groups without any custom rule because the connector and schema configuration provide the required instructions for reading objects from the source system.
Rules are used when additional customization is needed. For example, an aggregation rule may transform incoming attribute values, filter records, normalize data, customize correlation behavior, or handle source- specific logic that cannot be expressed through standard configuration. However, this makes rules optional extension points, not mandatory components of aggregation.
A properly configured application can aggregate accounts using its connector settings, account schema, group schema, and aggregation task options alone. Rules should be introduced only when the standard connector behavior and configuration do not satisfy the implementation requirements.
Reference topics: Applications, aggregation tasks, connector configuration, account schema, group schema, correlation options, application rules, connector rules, and IdentityIQ extensibility through BeanShell rules.