Use of condition types 1204-1207 against facilities in Treasury

Hi Experts,

Can anyone tell me use of condition types 1204 to 1207 against facilities? In fact, I have created facility using product type-56B and maintained credit lines. I can see condition types under charges tab of facilities. If i enter condition types with certain fixed value/rates, those are showing under cashflows and subsequently showing in TBB4(accruals) instead of TBB1. Can you give clarity on these condition types and importance with respect to facilities?