An issued invoice’s content cannot be edited. Use a credit note to correct errors. The credit note has its own invoice number, and both documents remain in the invoice history.
Credit the whole invoice or selected lines
Open the invoice and choose Credit note. You can credit the whole invoice or selected lines, such as an incorrect line for hours worked. Enter a reason for the credit. It is saved in the invoice history.
Choose whether to bill the work again
Choose Return to billable work if you want to invoice the credited work again. Otherwise, the work remains unbilled and does not reappear in the billing data.
Credit and invoice again
Credit and invoice again creates a credit note and opens a new invoice draft from the returned work. At least one line must be returned to billable work to use this option.
Correct and review the draft, then issue and send the new invoice as usual.