In an event of Sales Return, the following adjustment pertaining to stock and accounting can be handled in multiple ways. Let's check what stock and accounts posting would be posted based on the Sales Return adjustment.
If a customer request for the returns even before processing a payment, then you can simply:
If your statutory laws don't allow you to cancel the Sales Invoice, you can create a Credit Note against a Sales Invoice as well.
This is a scenario where the customer purchased an item from you for which Sales Invoice as submitted, and also paid.
As per this entry, the sold items will be accepted back in your Warehouse. Also, the payment received from the Customer will be reversed.
After the Credit Note creation, the Outstanding Balance of Sales Invoice will turn negative. This will give you scope to adjust this Sales Invoice (with a negative balance) to adjust against the future outstanding Sales Invoice.
In the case of Sales Return where the customer didn't process any payment, you can simply create a Credit Note. On creation of Credit Note, Outstanding of the Sales Invoice will become negative.
For the Adjustment of stock, you can create a Sales Return against Delivery Note or in the Credit Note itself, check field "Update Stock".