Default Excise Groups and Series Groups

Hi,

Default Excise Groups and Series Groups is Determined mainly based on Sales area+Shipping point PlantExcise Group+Series Group.

Here i am Facing the Problem is,I have a Sales Area 108,

I tried to maintain Common Distribution channel and Common Division in Maintain Default Excise Groups and Series Groups, but system is not picking the Excise and Series Group in Excise Inovice.

Shall i maintain 108 Sales areas or Any solution for this.

Thanks in Advance

Regards

raj.