To return a product to a supplier i.e. the item is damaged or unwanted and it is not being returned via a customer return, change the status. To do so:
1. Go to Stock > Products> search for the item > open the Product Record
2. Click on the Balances button (bottom-right)
3. Click on the Batch Records tab at the top
4. In the lower half of the screen Items in selected Batch, double click on the line where it has a Status of General Stock
5. In the pop up, choose the Warehouse of Damaged Stock or Goods Returns from the drop down list
6. Click Save
When you go back to the Supplier Returns look up, the Product will appear against the supplier if the stock batch was purchased from a supplier or OWN if added via a stock take.