Nexura DigitalAI · Automation · Marketing
Nexura Digital service

Invoice and document automation with human review

Invoices arrive by email, as PDFs or phone photos, and someone types them in. We automate reading and checking, and only send you what doesn't add up.

Invoice and document automation reads PDFs, scans and e-invoices, extracts the fields you need and writes them to your ERP or a spreadsheet. We set it up for companies that type in supplier invoices or other repetitive documents by hand today. You start with a 7-day trial on one document type and one intake channel.

What we automate

Intake and classification

A dedicated mailbox, a Drive or SharePoint folder, or an upload form. Each file is classified by type, such as invoice, credit note or delivery note, and matched to its supplier.

Reading and extraction

If the invoice carries structured data (Facturae, UBL or Factur-X), we read the XML. If it's a PDF or a photo, we use OCR with Google Document AI, Azure AI Document Intelligence or Amazon Textract, or vision models that return the fields in a fixed schema.

Validation and export

  • Net amount, VAT, withholding and total add up
  • Valid tax ID or VAT number, checkable in VIES for intra-EU suppliers
  • No duplicates from the same supplier
  • ERP entry via API, or a spreadsheet row, with the PDF filed

Human review and data protection

Review the exceptions, not everything

Only what needs it goes to review: uncertain readings, totals that don't add up, new suppliers, large amounts and, above all, changed bank details, a classic fraud signal. The reviewer sees the document beside the extracted fields, corrects and approves it, and everything is logged.

GDPR at the technical level

Invoices contain personal data, for example from sole traders. We extract only what's needed, use an EU region where one exists, restrict access and limit how long n8n keeps execution data. This is technical assistance, not legal advice: the legal basis, processor agreements and retention periods are yours to decide with your advisor.

How we put it in place

Four steps

  • Real sample: you gather representative invoices, including the awkward ones
  • Field schema and rules agreed with whoever enters invoices today
  • Build in n8n and test without touching production
  • Field-by-field measurement and tuning before going live

When it fits and when it doesn't

It fits

When you regularly receive invoices, delivery notes, orders or other documents with recognizable fields, someone spends hours typing them in, and the destination has an API or a well-structured spreadsheet.

It doesn't fit

  • You only get a few invoices a month: setup may not pay off
  • Your accounting software already captures invoices and works well
  • Documents are handwritten or the photos are unreadable
  • You need to issue invoices that meet Spain's Verifactu or TicketBAI requirements: that's your invoicing software's job

What we deliver

A working system

  • Workflows on your server, n8n Cloud or a VPS, included in the quote
  • Exception queue with review instructions
  • Field mapping to your ERP or spreadsheet

Documentation and control

  • Accuracy report on your sample
  • Map of where data flows and how long it's kept
  • Alerts when a document fails or gets stuck

Your 7-day trial

Supplier invoices from one mailbox

A realistic scope: invoices arriving at one specific mailbox are read, validated and written to a Google Sheet or your ERP sandbox, with their exception queue. We review the results on your sample with you, field by field. Scope, dates and terms are set in writing before we start.

FAQ

Frequently asked questions

How accurate is invoice reading?

It depends on the quality and variety of your documents, so we don't give a number up front. We measure it on your real sample, field by field, and set thresholds: anything that fails the checks goes to human review instead of into the ERP. E-invoices with XML don't even need OCR.

Does it replace my accountant or bookkeeping team?

No. We automate data capture and export, but we don't do bookkeeping or tax advice. Posting and allocating each expense, and deciding how an invoice is treated for tax purposes, stay with your team or your accountant; the system saves them the typing and flags what doesn't add up.

Which ERP or software does it work with?

Any that has an API or accepts file imports, such as Odoo, Holded, Sage or Business Central, or simply Google Sheets or Excel. If your software only allows manual entry, we look at file imports before any fragile workaround, and we check what your specific version allows.

Where are my invoices and their data stored?

In your systems: the original PDF stays in your folder or ERP, and the workflows run on a server you pay for. The OCR service or model we choose processes each document under its own terms, which we review with you, and we limit what's kept in the execution history.

Contact

How many invoices does your team type in each month?

Tell us how they arrive today and where they need to go. We'll send a written 7-day trial proposal with one document type and your real sample.

Phone+34 603 636 249
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Emailnexuradigital2026@gmail.com
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n8n · AI

How much time could automation give back?

Get a rough estimate of the savings with n8n and AI.

50%
0hours a month
0saved a month
0saved a year

Formula: weekly hours × 4.33 × automatable share × hourly cost. It is an estimate, not a promise; during the 7-day trial we measure it with your real case.