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Invoice display or template issue on PrestaShop

A PDF invoice with a broken layout, a greyed-out invoice button, a field to add to the existing template: PrestaShop invoice generation relies on a specific template, with legal rules that limit what can be freely changed once an invoice has been issued.

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How a PrestaShop invoice is generated

The PDF invoice is built from a template inside the theme’s pdf/ folder, mainly the invoice.tpl file. What’s displayed — legal notices, logo, header, company details — is largely configured from Preferences > Invoices, with no code involved: that’s the first place I look when something’s missing or wrongly placed.

A recurring point: the invoice download button stays greyed out or absent until the order reaches a status marked as paid in its configuration. An order stuck at an intermediate status, even if it looks finished to the customer, therefore generates no invoice at all.

What the law restricts

Invoice numbering is legally regulated in France: the Code général des impôts (article 242 nonies A of annex II) requires a unique number based on an unbroken chronological sequence. Once a number has been assigned to an invoice, it can’t be freely changed or reassigned, even to fix an error or fill a gap in the sequence. This constraint isn’t specific to PrestaShop, it limits what any developer can legitimately offer on this point.

A purely visual issue, on the other hand — a misplaced logo, an overflowing table, inconsistent fonts — is fixed with no legal constraint at all: it’s a layout change to the PDF template.

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Frequently asked questions

Can invoices be renumbered from scratch?
No, not once they’ve been issued: the Code général des impôts requires an unbroken chronological sequence, and a number already assigned can’t be freely reassigned. Opening a new series stays possible where trading conditions justify it; rewriting history does not. I flag this systematically before any request of this kind.
Why does the invoice button stay greyed out on some orders?
Because the order hasn’t reached a status marked as paid in its configuration. I check the order’s exact status first before looking for a template issue.
Can the customer’s intra-community VAT number be added to the invoice?
Yes, but that field doesn’t exist by default on the standard template: it needs pulling from the customer record and adding to the PDF template, which is targeted development, not a setting.
The invoice logo is wrong, how do I change it?
That’s usually set from Preferences > Invoices, where a logo dedicated to invoices can be defined independently of the site’s main logo.

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