Suppressing material determination in BAPI_SALESORDER_CREATEFROMDAT1

Hello!

Does anyone here in the forum know how to suppress the material determination when using BAPI_SALESORDER_CREATEFROMDAT1?

Basically, I have material B as a replacement part for A. When I call the BAPI inside my program, I have A as an input but upon checking the created sales order, I saw material B instead.

Your help would be much appreciated.

Thanks a lot in advance.