Sales orders confirming quantities with decimal places

Hi all,

when a sales order/scheduling agreement is being created its confirming a quantities with decimal places.

eg: when a sales order/ scheduling agreement is created with 100 Qty.

Its confirming me 60.20 qty on one date(line item) and 39.80 on another date(next line item). This is causing big problem in processing further.

what could be the probable area where we can check for the discrepancy for this problem.

Advance thanks for your information/suggestion

Praveen