Hi Godhelp,
Partner here does not mean business partner. Its payment request clearing account for the clearing partner and its GL account.
The clearing partner communicates with the external bank and has been created as a current account in the IHC Center. When you post the Payment order to provisionally, then system check on Routing that has been defined to determine the clearing partner. The IHC Center has been connected with the SAP FI of the clearing partner using the ALE Customizing. In the SAP FI system of the clearing partner, a credit note (for the subsidiary) and a debit note (for the clearing partner) will be carried out.
Kind Regards,
Chandra Sekhar Ija