excise sales returns

Hi Gurus,

I have one doubt regarding the excise sales returns in factory sales

Sales from factory

1) Create sales order

2) Delivery

3) Billing

4) Excise invoice

Returns

1) create sales order returns

2) PGR

3) credit for returns

My doubt is that do we have to make any seperate entry to return excise values??

Regards

Sidhu