BAPI_PO_CREATE1

Hi ,

I am on SAP 4.7 version , and am using BAPI_PO_CREATE1 to create purchase orders .

Am facing problem in the Quantity updation .I need to update the Order Quantity and Order Units . But using the fields ,

QUANTITY

PO_UNIT

the fields of 'Order Quantity in Base Unit' gets updated .

Which fields do I use for Order Quantity in Order Units ?

Regards ,