Syslog can be used to identify the details of a system error presented in the UI. When a system error occurs, IdentityIQ typically logs detailed error messages, stack traces, and other relevant information to Syslog or other logging frameworks configured in the environment. By reviewing these logs, an administrator or engineer can identify and diagnose the specific error that was encountered in the UI.
SailPoint IdentityIQ Logging and Monitoring Guide
SailPoint IdentityIQ Administration Guide (Sections on Error Handling and Troubleshooting)

Yes, the Provisioning tab under the " Administrator Console " can be used to manually retry provisioning attempts for pending transactions. This feature allows administrators to retry failed provisioning operations or manually trigger provisioning actions that are in a pending state, providing greater control over the provisioning process.
SailPoint IdentityIQ Administration Guide (Provisioning Management and Manual Retry) SailPoint IdentityIQ Provisioning Guide

The statement that " An Application object is not required to aggregate external user account information into IdentityIQ " is false. In SailPoint IdentityIQ, an Application object is essential for aggregating (importing) external user account information. The Application object defines the connection settings, schema, and mapping that enable IdentityIQ to connect to external systems and retrieve identity data. Without an Application object, IdentityIQ would not have the necessary configuration to establish a connection and aggregate user data from external sources.
SailPoint IdentityIQ Administration Guide (Section on Applications and Aggregation) SailPoint IdentityIQ Integration and Configuration Guide

The statement is true. In SailPoint IdentityIQ, it is possible to configure a role to include a set of IdentityIQ capabilities. Capabilities in IdentityIQ are permissions that grant users access to specific functionalities within the platform, such as managing identities, viewing reports, or administering roles. By associating a role with specific capabilities, you can control what actions users assigned to that role can perform within the IdentityIQ environment.
Reference:
SailPoint IdentityIQ Administration Guide (Role Configuration and Capabilities Section) SailPoint IdentityIQ Configuration Guide (Sections on Roles and Capabilities)