Multi-page PDFs and large invoices

Bundled PDFs (cover letters, terms, multiple invoices in one scan) are common. Cortena shows page navigation in the viewer and lets you reprocess only the pages that contain the real invoice when extraction picked up the wrong section.

1. Recognise multi-page documents

When the attachment has more than one page, the invoice viewer shows a page indicator (current page / total pages). Scroll or use viewer controls to confirm which pages hold totals, line items, and supplier details.

Large files behave the same way. The issue is usually wrong page selection, not file size alone.

2. Fix extraction with page-range reprocess

If line items or totals clearly came from a cover page or the wrong annex:

1. Open the invoice in Payables or Expenses.
2. Header ⋯ menu → Reprocess invoice.
3. For multi-page scanned PDFs, choose a preset or custom range (for example pages 3-4 only).
4. Confirm. Cortena re-runs extraction on those pages and updates stored invoice fields.

Full-document reprocess (all pages) remains available when the invoice truly spans the entire PDF.

Detailed steps: Reprocess.

3. After reprocess

Check Activity on the invoice. It records which page range was reprocessed. Re-verify booking match, totals, and Document type after a range run.

Keyboard shortcut Ctrl/Cmd+R may trigger full reprocess with confirmation. Prefer the menu when you need a subset of pages.

4. When page-range does not apply

Structured e-invoices (embedded XML such as ZUGFeRD or standalone UBL) read data from the XML. Slicing the PDF pages does not change extracted business fields. For those, fix source data or supplier format instead of page-range reprocess.

See E-invoices and FAQ Can I reprocess pages on an e-invoice?.

Tips and limitations

• Page-range reprocess replaces extracted content for the chosen pages. Review match and cost centers afterward.
• Very poor scan quality may need a better source PDF from the supplier, not repeated reprocess.
• Duplicates and reference numbers may change after reprocess. Re-check duplicate scope on the list.

Quick reference