Number range for document types

Hi everyone,

I want to have anumber range 3200000000----3299999999 for my PO document type ZEOH which is a copy of NB. The number range for NB starts with 45. Now when i am inserting the 32 series & than assigning to the doc type ZEOH system is giving error " insert valid intrernal number range". Please suggest what internal number range can i use or how to use the 32 series.

Thanks