In CASB investigate you see multiple notifications of the same Gatelet event/activity.
Component: CASB Gateway
Enable the option Suppress Duplicate Notification of Blocks under CloudSOC Settings > Gateway.
When enabled, CloudSOC does not generate duplicate notifications or activity logs when blocking an excessive number of operations by the SaaS service.
Note that by enabling this, CloudSOC also suppresses notifications when the end-user manually retries the operation.