Trip number range concept

Hi All,

Please explain me the concept of trip number ranges that would be beneficial in production environment. I have few doubts:

1. Are trip number ranges based on yearly basis i.e. is it possible to change the trip number range on year basis.

2. What is main logic to keep in mind for trip number ranges for a production environment.

3. We have 40 personnel areas..so we are planning to keep different number ranges for each Personnel Areas. Is it the right approach?

Please advise

Regards ��