F.35 last payment is updated wrongly

Hi,

I could see the wrong payment in F.35. I.E we received payment $ 4500 and made partial payments againest open invoices($ 4161.35 and $338.65). But in F.35 it is showing $677.10. I could see the same figure in CASHA=KNKK. I am not sure how did this field updated with the figure. Can anyone tell me how can i resolve this issue?.

I will assign douple points..

Thanks,

Jagadeesan