PO response not working from SAP XI -> SRM 5.5
We are running SRM Server 5.5 and have a scenario whereby PO responses need to be sent to SRM.
I am using the inbound proxy called "OrderResponse_CreateOrChangeVendorView_In" in software component version "SAP SRM SERVER 5.5".
Even if I try test the proxy with some data I get serialisation errors.
My main question is I need to understand how the PO response stuff works in SRM? I mean if I look at a PO on the SRM web interface I can see "PO Response" on the ITEM level, BUT what is interesting is that the INBOUND proxy structure does not have a field for "ACCEPT", "REJECT" type fields on the ITEM level, so how would an item be accepted or rejected in SRM?
Even if I look in BBP_PD on the item level I cannot see any field that says anything related to "accepted or rejected"?
I have looked at the implementing Proxy class / method
This then calls a function module "BBP_ORDRSP_CRT_CHG_VND_IN".
Eventually the function module BAPI_POEC_ADD_CONFIRMATION is called. I ran this function module for a PO manually and got the following response:
"Purchase order confirmation for purchase order 3200000671 was created"
But then when I log onto the web interface for this order I see nothing regarding order response.
Are there some settings in SPRO I need to configure?
Could someone please guide me on how to get there order response messages into SRM on the ITEM level?
Thanks for the help, I really appreciate it