Are there away we can find out who made change on Operator ID profile like: change password, disable operator id or deleted operator ID? And The operator ID already got deleted - How can we rollback that change?
Harnesses have auditing capability: Display Options >> Enable auditing
Flow Actions as well: Security >> Audit use of this Flow Action
The above would be useful if you can prevent an Operator record from being edited directly within the developer portal, instead only permitting an Operator record to be modified using a specific harness or flow action.