F2 Application fill up

[jumpin_hunk]

Hai when my wife filing up F2 online thru VFS site she didnt see any SEVIS info(there is SEVIS ID for principle applicant-mine), but i read in some threads that ppl see SEVIS for spouse(dependant). SO which SEVIS number/ID do we have 2 fill there?

Pls let me know

thanks

[edu]

She has to enter the principal applicants SEVIS ID and she dosent have to pay sevis fee again