Max. no. of sessions reached - using ITS on WAS

Hi All,
We are facing an issue wherein whenever we try to create a new session in SAP GUI we are getting an error saying
"Maximum no. of sessions reached"
We are using ITS on WAS(webgui) i.e.using the WAS URL we are signing in where we can see the SAP Easy Acess screen.Whenever we are giving /ose38 it throws up a popup saying max.no. of sessions reached.
Can any1 tel me how this can be avoided?
Is there a ITS parameter through which we can change the max limit of sessions per user? If yes,can you tel me how to do it?
Also how many sessions can be opened in parallel using SAP logon pad ?? And how many sessions when are we acessing the backend frm the browser window?
Regards,
Abhishek

Abhishek,
the following parameters (set them with RZ10) should solve your problem:
rdisp/max_alt_modes (maximum number of sessions per user)
login/disable_multi_gui_login ( enable / disable multi-login)
kr, achim

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