Dear Nitin, thank you,
I accept your comment about query, I'll take it into account further.
My post is only for information, it's not a question.
I had a problem with transfer of condition types of discounts/surcharges with % calculation type (A) from external system to SAP through interface TradingOrderRequest_In.
I didn't know how to fill price container <PriceComponent> in this case and there is no information about this interface in Internet.
Then I managed to solve it by changing <BaseCode>.