The workflow JSON

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{
  "name": "Factur-X Engine Demo",
  "nodes": [
    {
      "parameters": {},
      "name": "Start",
      "type": "n8n-nodes-base.start",
      "typeVersion": 1,
      "position": [
        250,
        300
      ]
    },
    {
      "parameters": {
        "keepOnlySet": true,
        "values": {
          "string": [
            {
              "name": "invoice_number",
              "value": "INV-{{$now.format('yyyyMMdd-HHmm')}}"
            },
            {
              "name": "buyer.name",
              "value": "Acme Corp"
            },
            {
              "name": "seller.name",
              "value": "My Company"
            }
          ],
          "number": [
            {
              "name": "amount",
              "value": 1500.0
            }
          ]
        },
        "options": {}
      },
      "name": "Set Invoice Data",
      "type": "n8n-nodes-base.set",
      "typeVersion": 1,
      "position": [
        450,
        300
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "http://facturx:8000/v1/convert",
        "sendBinaryData": true,
        "binaryPropertyName": "pdf:data",
        "jsonParameters": true,
        "options": {},
        "bodyParametersJson": "={ \"metadata\": { \"invoice_number\": \"{{$node[\"Set Invoice Data\"].json[\"invoice_number\"]}}\", \"seller\": { \"name\": \"{{$node[\"Set Invoice Data\"].json[\"seller\"][\"name\"]}}\", \"country_code\": \"FR\" }, \"buyer\": { \"name\": \"{{$node[\"Set Invoice Data\"].json[\"buyer\"][\"name\"]}}\", \"country_code\": \"DE\" }, \"items\": [ { \"name\": \"Consulting Services\", \"quantity\": 1, \"price\": {{$node[\"Set Invoice Data\"].json[\"amount\"]}}, \"vat\": 20.0 } ] } }"
      },
      "name": "Generate Factur-X",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 2,
      "position": [
        650,
        300
      ],
      "notes": "Generates a PDF/A-3 from raw data and a template PDF"
    },
    {
      "parameters": {
        "method": "POST",
        "url": "http://facturx:8000/v1/validate",
        "sendBinaryData": true,
        "binaryPropertyName": "file:data",
        "options": {}
      },
      "name": "Validate Invoice",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 2,
      "position": [
        850,
        300
      ],
      "notes": "Validates compliance with EN 16931"
    }
  ],
  "connections": {
    "Start": {
      "main": [
        [
          {
            "node": "Set Invoice Data",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Set Invoice Data": {
      "main": [
        [
          {
            "node": "Generate Factur-X",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Generate Factur-X": {
      "main": [
        [
          {
            "node": "Validate Invoice",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

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