Additional Header Informations in Sender-Proxy for XI Routing

Hi All,

I'm using an ABAP-Proxy to send data to XI. There should be a routing rule to decide, which Business System will be the receiver of the message.

As the size of the Message is quite large I'd like to do without Message Mapping. But in this case I don't have the needed information for routing in the XI Message Content.

Is there any possibility to fill some context objekt in the sender proxy, which I can use for the rounting in XI. I found some parameters like URLParamOne, URLParamTwo, .... or HeaderFieldOne, HeaderFieldTwo, ...

Does anybody know, whether I have access to any of these informations in my sender proxy.

Thanks a lot for your help

Barbara