Excise invoice number range for Depot

Hi All,

Pls guide me to assgin excise invoice number range for Depot.

My client asking me to assgin domestic and export excise number range for Depot.

pls clarrify:

What are the purposes of the number range objects  J_1IEXCLOC and J_1IEXCINV? In which conditions 

1. either of the two, or  2. both the objects should be used?

Thanks,

Muru..