Docs/Integrations/n8n/Templates/Validate E-Invoices via Drag & Drop

Validate E-Invoices via Drag & Drop

Upload e-invoices through a simple web form and get instant validation results. No curl, no API knowledge, no coding needed.

n8n FormInvoice-api.xhub3 min setup

How This Workflow Works

Validate E-Invoices via Drag & Drop — Workflow Diagram
  1. 1

    Presents a clean web form for file upload

  2. 2

    Auto-detects the invoice format (XRechnung, ZUGFeRD, Factur-X, etc.)

  3. 3

    Parses the e-invoice to extract key data

  4. 4

    Validates against country-specific rules (EN 16931)

  5. 5

    Returns a clear result: VALID, INVALID (with errors), or PARSE ERROR

Why This Matters

The webhook-based approach (curl) is great for developers, but accountants and office workers need something simpler. This form provides a browser-based UI, country selection, and instant feedback.

Google Sheets Structure

ColumnDescription
statusVALID, INVALID, or PARSE ERROR
formatDetected format (xrechnung, zugferd, etc.)
countryValidation country code
invoiceNumberExtracted invoice number
sellerNameSeller/supplier name
buyerNameBuyer/customer name
totalInvoice total with currency
errorsList of validation errors
warningsList of validation warnings

Setup Steps

  1. 1

    Install the n8n-nodes-invoice-api-xhub community node

  2. 2

    Create an API key at invoice-api.xhub.io

  3. 3

    Configure the invoice-api.xhub credential in n8n

  4. 4

    Activate the workflow

  5. 5

    Open the form URL shown in the 'Upload Form' node

Workflow JSON

Preview (truncated)

json
1{
2  "name": "Validate E-Invoices via Form Upload",
3  "nodes": [
4    {
5      "id": "form-trigger-validate",
6      "name": "Upload Form",
7      "type": "n8n-nodes-base.formTrigger",
8      "typeVersion": 2.5,
9      "position": [400, 600],
10      "parameters": {
11        "path": "validate-einvoice",
12        "formTitle": "E-Invoice Validator",
13        "formDescription": "Upload an e-invoice file (XRechnung, ZUGFeRD, Factur-X, UBL, CII) to validate it against EU standards.",
14        "formFields": {
15          "values": [
16            {
17              "fieldLabel": "Invoice File",
18              "fieldType": "file",
19              "requiredField": true,
20              "acceptFileTypes": ".xml,.pdf",
21              "multipleFiles": false
22            },
23            {
24              "fieldLabel": "Country",
25              "fieldType": "dropdown",
26              "fieldOptions": {
27                "values": [
28                  { "option": "DE - Germany" },
29                  { "option": "AT - Austria" },
30                  { "option": "CH - Switzerland" },
31  // ... (truncated)

Use Cases

Quick Check

Validate a single invoice before sending it

Supplier Onboarding

Let suppliers verify their e-invoices meet your requirements

Internal QA

Self-service validation tool for the accounting team

Multi-Country

Validate against DE, AT, CH, FR, IT, ES, NL, BE, PL rules

Get Started Now

Import the workflow into your n8n instance and get started in minutes.