Which ORA- in alert ?

OEM 13.5

Getting Alert "1 distinct types of ORA- errors have been found in the alert log."

But, there's a lot of ORA- errors, in my alert.log,

and the timing sort of suits with the OEM Alert timing ...

So, I'm not sure which exact ORA- error is being referred to. Obviously, some ORA- errors in my Alert.log are ignored - which is good.

But the Alert doesn't state which ORA- error it is ? Or, does it ? Where ?