Add an invoice date to be generated when you generate the invoice_id.
Displayed in the order info (both admin and catalog), invoice and shipping label.
This assures you that the invoice dates are sequential, as are the invoice IDs.
If an order is placed and not paid for in full while the next order is completed and an invoice ID is created, the dates on the invoices can get crossed. (The only date on the invoice by default is the order creation date)
With this mod you will show the order ID, the order date, invoice ID and invoice date, no matter how long it takes between the order being created and the invoice ID being generated, the invoice dates will remain correct.
A must-have for a correct and true invoice system!
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