How a long credit invoice breaks across pages
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Page 1 carries the full letterhead. Later pages carry a short one: seller, document, number, date.
Column headings repeat on every page.
Carried forward / brought forward so a page cannot be swapped or removed unnoticed.
Totals, the refund line and the Last page block appear once, on the last page.
Every page is numberedn of m, whatever the print options say.
Rows per page are fixed numbers here (11, then 18) so the break is easy to see. The real renderer breaks on height.
What is different from the sales invoice
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The title is CREDIT INVOICE and the original invoice number and date are always printed.
Unit Refund replaces Price; there is no Discount column because the unit refund already has the discount taken off.
The totals read Refund before tax, Tax, Rounding and Refund total, followed by the refund line.
No deliver-to, no e-Invoice QR, no bank details. Nothing is delivered and the money goes to the customer.
The return reason is printed in words, and the returned serial numbers print in the item note.
The e-mail says Refunded, never Amount due, and names the original invoice under the amount.
Mockup only — nothing here is wired to the server. The sample is the Completed return CI-12/BO/2609-0002
of invoice SI-12/BO/2609-0005, the same as in the return step form mockup.