TREX registration to SLD doesn't work.

Hi everyone!

I have installed a new TREX 7.0 with the latest patch level and I have a real issue in the post task of the TREX installation guide. When the TREX tries to update the remote SLD with own data it get's an error message "HTTP ERROR CODE 400" Bad request. I'm using the default port 50000 and XISUPER as user to connect to the SLD. The SLD runs on the same instance as SAP XI. Is it possibly to run SAP XI 3.0 SP 18 with NW2004s TREX or do I need to upgrade the SAP XI instance to the latest WEB AS (ABAP & JAVA) to be able to communicate with the TREX? I have also updated the SLD with the latest CIM model and I'm now running out of ideas. So any suggestions would be nice.

Thanks!