Nota Fiscal Number 

When a Nota Fiscal is printed, the R/3 System automatically assigns the Nota Fiscal number. Number ranges are defined via the Group number .

The system determines the group number via the form. Each form must be linked to a group number.

You can maintain group numbers by choosing the Customizing path for Group number.

You can maintain the number ranges for the group number by choosing the Customizing path for External number range.