Goods to be returned to store after issue

Hi all,

After goods have been issued from store, I want to know if I can take the goods back? if yes, how do I proceed in SAP?

I also need to take back the goods at

1. value at which it was issued, or

2. lower value than it was issued.

Thanks for your help.

Nas

If there is any documentation available, please let me have it.