How to insert sales order in SAP B1 using DI API with updating the quantity (inventory) in the various tables of stock

Hi All ,

I'm new here and i need help.

I need to be able to insert sales order data to SAP B1 using DI API.

Actually i can insert sales order SAP B1 using DI API and when i log in SAP i found the sales order created via DI API but the quantity in OITW and OITM table does not change.

Do I have to substract the quantity in OITW and OITM or sap will make the adjustment itself and how.

Any help would be very much appreciated.