Cancel an issued invoice

If invoice has already been issued and sent to customer, you need to issue a new credit note. You should not modify already sent invoices! 
 
 Open the problematic issued   invoice and remove all of its items . 
 Update the  shipping and financing costs to zero . 
 Change status of the issued invoice to canceled . 
 Change invoice's  delivery note status to canceled. 
 Delete shipping list : 
 Delete  packing list  (flow is the same as for deleting shipping list) 
 Go to the  Packing work order and open it's material flow. 
 Find all of the write-off documents:  
 
 
 
 Open each write-off and cancel it (this will remove write-off transactions from database): 
 
 
 Material is now back on packing work order. Do with it what is necessary.