Hi,
I created a SAP messages and this was the final answer (solution) from SAP:
Dear Customer,
Unfortunately, PP cannot be deactivated here as it is always used here for xi message processing.
If you want to deactivate it, you need to do a customer modification.
Best Regards,
Atul Prabhudesai
Business Suite & Technology
SAP Active Global Support
See also note 1779083
Pieter