Create Logon ticket

Hi:

Is there any way I can create my own logon ticket?

I have a requirement where by I need to have one SAP id and many j2ee Id mapped to it. Since we cannot use user mapping for adaptive RFC for Web Dynpro applications, i need an alternate way of mapping users.

My idea is to create all the j2ee userid under a group and when the users logs in, I change the logon ticket if that user belongs to the group. But I am not able to find any info on how to create a ticket.

Anyone has any idea regarding this or have faced similar problem?

Thanks,

Subramania