ABAP Proxy Sender: Change EOIO to EO/BE

Hi experts,

I have a SAP Transportation Management integration scenario (as part of standard ES conten) via SAP PI as follows:

SAP ECC (EHP 6) => SAP PI => SAP TM

This ES content scenario works only via ABAP Proxies (Sender ECC: Client Proxy, Receiver TM: Server Proxy)

Now I have the problem that when a message (SalesOrder) is triggered from SAP ECC, always the QoS (Quality of Service) is set to "EOIO". Is there a way to change this from EOIO to EO or BE? If yes where and how can I do that?

Thanks for your help and Best Regards

Harald