Need to derive Discounted price and Promotional Goods promotional item using QP_PREQ_PUB.PRICE_REQUE

Hi,

We are trying to get following two things from API "QP_PREQ_PUB.PRICE_REQUE" while calculating item price for sell to show it to customer.

1. Item price with the discount adjustments by passing list header id and list line id.

    I observed that if I pass OPERAND_CALCULATION_CODE and OPERAND_VALUE to the API in line detail records it gets calculated however if I pass just list_header_id and list_line_id it does not derive the corresponding discount using modifier setup, is it intended functionality?

2. We need to get the promotional product information by passing the list_header_id and list_line_id of the promotion to the API. The API just returns price of the buy item passed but does not return promotional product associated with it using modifier of type "Promotional Goods".