Purchase order to Sales order

Hello Gurus,

I am replicating Purchase order to Sales Order using XI(R/3->XI->R/3) scenario

I see one inboud and outbound IDOC's in IDX5 transaction.

Error : When i see in Target system, IDOC is there but with errors(says partner profile is not there), it is not finding out Sendor partner number, partner type and Receipient Port.

i check my mapping in XI, i tried to give all above errors constant (Sendor partner, partner type....)

Could you please suggest me ? i already wasted enough time on this.

Thanks

sarath