Setting Number Range for CO Documents

Whoops!!! First time trying to set number range for CO Document! I went straight to IMG and access the maintain number range under Controlling menu. And...Its BLANK!

Mmm...supposedly there are business types to be assigned to groups and the groups are to be assigned to number range. What happened?

I found out that those business types are not going to appear automatically. You have to generate program RKTKA04C which functions to refresh the business types list.

So what i do was :

1. Run report RKTKA04C from SE38

2. Create Group for Business Types and assign number range to each group

3. Assign business types to the group

And~ VOILA! all done and CO documents can be created