7.5 bpc nw i/p error

hi

When i key in any value in one particular report it shows -ve value , for example if 1 the shows -1. the acc type associated is verified and it is fine with settings as inc and exp respectively. In all other reports and i/p schedules it is fine for the same accounts . only inone report it shows the -ve values.

not knowing y. in backend it is right , the way i keyed in. but in report it shows -ve.

only one i/p sch shows negative any suggestions?

thanks