Difference between Void /Write-off /Credit Note

Void invoice: This completely cancels the invoice - Use when an error has been made and you want to cancel it. The billing is released, and the invoice can be invoiced again.

Write-off: Use when the invoice is old and the client has gone bankrupt and will never pay this invoice. The invoice is not canceled but closed as a write-off, and in accounting terms, it can be recorded as a bank debt instead of the bank account.

Credit note: This allows for the reversal of an invoice - It will also reverse the billing. It can be full or partial.