NOTE: This option isn't available in Sage 50 Accounts Essentials. 

1. On the navigation bar, click Invoices and credits.
2. Locate and click the invoice you want to copy, then click Duplicate.
    
   

   
   

   To create a credit note based on the selected invoice, click Credit invoice.
   

3. 
   

   Make any required changes to the invoice, then click Save.

 TIP: Don't forget to Update invoices or credits to the ledger once finished. 

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