multiple delta DTP from same source to same target

Hi Gurus,

I was under impression that we can create multiple delta DTP from same source to same target but these delta DTP must have different filter values.

Now i am working in BW 7.3, here i am unable to create more than 1 delta DTP, when i try to create another delta DTP with different "Filter" value, then while DTP activation it gives a message that "already delta DTP exist". So i understand now that we might not have 2 delta DTP for same source and target(at-least in 7.3). Please confirm that my understanding is correct.