'#LDS#Automatic approval' as PersonHead on Unsubscribe

Hi All,

I'm trying to retrieve the Persons responsible for unsubscribing requests. I'm leveraging the PWODecisionHistory table to get the PersonHead where DecisionType = 'Unsubscribe'. This works fine for my purpose most of the time but there are instances where the PersonHead is filled in as '#LDS#Automatic approval'. In what scenarios are PersonHead filled in as '#LDS#Automatic approval'? Is there another way of getting the Person responsible for an unsubscribe?

Thanks in advance,

Febin