Hi,
In the last screenshot I can see you have selected the option CONTAINS GUID so my question is in attribute 0BPARTNER are you sending GUID or ID ?
If it is business partner ID then you should select CONTAINS ID and keep the function module CRM_MKTTG_PF_CONV_ID_TO_GUID.
if its business partner GUID then you should select CONTAINS GUID and remove the function module.
Regards,
Naresh