Does nobody have an answer?
Try add Device_port to aggregation fields.
You mean at the correlated event "HA- Switch Port blocked or offline or online"? Aggregation fields Source IP & Device Port?
Would be nice if it would work but how shall he aggregate for the Device Port if it does not know the device port? As you see in the picture the field is empty :/
Nevertheless it is not possible to aggregate for the device port.