SAP Collaboration Rooms

Hi,

We have created a collaboration room, but when we try to save , system is displaying this error:

We followed the steps described on link below to create it :

http://scn.sap.com/docs/DOC-69871

User has all the collaboration roles assigned and the same password in the EP and in the backend system and connection is working in both directions .

Does anyone know what could be happening?

Thanks a lot, Sapera