Number range intervals for personnel no.

hello,

i want to define following number range -

00000001-09999999

10000000-99999999 - ex

the system already has sm ranges defined.i tried to delete those n create new ones......the mssg is - deletion only possible is status is initial.

what does initial status over here mean. clicking on the same gives the following procedure. how do i branch into status maintenance?

Procedure

1. Branch to number status maintenance.

2. Set the number status to '0'.

3. Branch to interval maintenance.

4. Delete the interval.