Changing Number Range Specifications 
You can change the specifications for a number range. This includes the number interval, the validity period and the current number. The current number is updated by the system for number ranges which are set up with internal number assignment.

You can change the lower and upper limits for number range intervals. Changing the lower limit in a number range with internal number assignment is advisable only if a number has not been assigned yet. In changing the upper limit, make sure the new number does not fall below the current number. The system ensures that the intervals do not overlap after you change the limits.
Changes may be necessary if a number range is not large enough. In this case, you can
Changing the current number is only permitted in special cases. This may be necessary if the system starts assigning numbers from the lower limit of the interval again and finds that a number was not released yet. A document with this number therefore already exists in the system. In this case, you can increase the current number. Generally however, you should
not change it.Changes to the validity period are usually not necessary. If you use a number range which is independent of the fiscal year, you have already specified a year far into the future. A change is therefore not necessary. If you use number ranges that are based on the fiscal year, you only need to define the number range for each fiscal year.
You can delete number ranges if no numbers were assigned from it. Otherwise, the system prevents you from deleting a number range set up with internal assignment and warns you when deleting a number range set up with external assignment. If you delete a number range, you must assign new number ranges to the document types affected by the deletion.