BIIF0001 - populating INTFC_BI_AEDS table for discounts

Hello,

we are testing out a new BI interface and cannot seem to make BIIF0001 create a bill with discount/surcharge. So we tested via Update Interface Transactions. We selected Discount/Surcharge (DISC_SUR_INDICATOR) as Discount and Entered Discount Surcharge ID (DISC_SUR_ID). The ID is set to 5% and has assigned Distribution code. Still the bill is created without Discount line.

Could you know if any other fields need to be populated in INTFC_BI_AEDS in order BIIF0001 to assign discounts to the line?

Thank you,

Tedy