Execution of reports in batch

Hello,

in a system there is a user TEST with no authorizations at all.

I used this user in a batch job which I created with SM36 and the report RSPFPAR with a variant to get a spool.

I executed this job and actually job finishes and the spool is created.

My own user has got all rights, so I can put every username in step of a job.

But I'm wondering that this job is executed with user TEST in step, which has no rights (no profiles, no roles).

I always thought authorizations are valid in background jobs too?

Where is my fault?

Regards,

Julia