According to the Lithuanian Accounting Act, credit notes must display the original invoice number for a transaction. You can set up the invoice layout that is specific to Lithuania.
Click Accounts receivable> Setup> Forms> Form setupto open the Form setupform.
Select the Lithuanian invoice format.
For more information, see " (LTU) Set up the Lithuanian format for printing sales documents".
Click Accounts receivable> Common Forms> Sales Order Details.
Accounts receivable> Common Forms> Free Text Invoice Details.
When you create a credit note, you must select the Returned item sales ordertype to print the original invoice number on the credit note.
Click Posting> Invoice.
The original invoice number is displayed in the Main invoice no.field when you print a credit note for a sales order or a free text invoice.