Production Order Number Range - SNRO

Hi Team,

I have defined number range for the production order in SNRO (Object: AUFTRAG).

I have defined the number range as 430000000000 - 439999999999.

Current number (production order number) is: 430000007931.But in between for many numbers (Eg:430000007930, 430000007929, 430000007928, 430000007927 etc), the production orders are not created in system. Directly the production order has been created with number 430000007931 by skipping the in between numbers. How to avoid this skipping of numbers?

Thanks