Problem with Partner Number (C4C Sales Quote)

Dear expert,

I have a problem with my partnemrnumber.
In C4C when I want to create a sales order, if I add two products, I can not see the PART_NUMB for the second product in my idoc. also in the payload I can not find RecipientID!

this is the mapping

in the idoc as you will see below I have PARTN_NUMB for the firs Product but not for the second product.

and this is the error I see in idoc

Can anyone help me about this that why I can not find RecipientID in payload and PART_NUMB for the second product?

Thanks

Sep