The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"name": "Re-check customer VAT numbers on a schedule",
"nodes": [
{
"parameters": {
"rule": {
"interval": [
{
"field": "weeks",
"triggerAtDay": [
1
],
"triggerAtHour": 7
}
]
}
},
"id": "a3000000-0000-4000-8000-000000000001",
"name": "Every Monday morning",
"type": "n8n-nodes-base.scheduleTrigger",
"typeVersion": 1.2,
"position": [
-560,
0
]
},
{
"parameters": {
"assignments": {
"assignments": [
{
"id": "s3000000-0000-4000-8000-000000000001",
"name": "customers",
"value": "={{ [{ \"name\": \"Siemens AG\", \"vatId\": \"DE811569869\" }, { \"name\": \"Example Oy\", \"vatId\": \"FI12345671\" }] }}",
"type": "array"
}
]
},
"options": {}
},
"id": "a3000000-0000-4000-8000-000000000002",
"name": "Customer list",
"type": "n8n-nodes-base.set",
"typeVersion": 3.4,
"position": [
-340,
0
],
"notes": "Swap this for your real source \u2014 a database node, a spreadsheet, your CRM."
},
{
"parameters": {
"fieldToSplitOut": "customers",
"options": {}
},
"id": "a3000000-0000-4000-8000-000000000003",
"name": "One item per customer",
"type": "n8n-nodes-base.splitOut",
"typeVersion": 1,
"position": [
-120,
0
]
},
{
"parameters": {
"vatId": "={{ $json.vatId }}"
},
"id": "a3000000-0000-4000-8000-000000000004",
"name": "Re-validate against VIES",
"type": "n8n-nodes-vatnode.vatnode",
"typeVersion": 1,
"position": [
100,
0
],
"credentials": {
"vatnodeApi": {
"name": "<your credential>"
}
},
"onError": "continueRegularOutput",
"notes": "Errors continue instead of stopping the run: VIES has per-member-state downtime, and one unavailable country should not stop the rest."
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "loose",
"version": 2
},
"conditions": [
{
"id": "c3000000-0000-4000-8000-000000000001",
"leftValue": "={{ $json.valid }}",
"rightValue": true,
"operator": {
"type": "boolean",
"operation": "notEquals"
}
}
],
"combinator": "and"
},
"looseTypeValidation": true,
"options": {}
},
"id": "a3000000-0000-4000-8000-000000000005",
"name": "Keep the problems",
"type": "n8n-nodes-base.filter",
"typeVersion": 2,
"position": [
320,
0
],
"notes": "Passes anything that is no longer valid, plus any item that errored."
},
{
"parameters": {
"select": "channel",
"channelId": {
"__rl": true,
"value": "",
"mode": "list",
"cachedResultName": ""
},
"text": "=:warning: VAT number needs attention\n*{{ $json.vatId || $json.error }}* is no longer valid in VIES.\nChecked {{ new Date().toISOString().slice(0, 10) }}.",
"otherOptions": {}
},
"id": "a3000000-0000-4000-8000-000000000006",
"name": "Tell the finance channel",
"type": "n8n-nodes-base.slack",
"typeVersion": 2.2,
"position": [
540,
0
],
"notes": "Pick your channel, or replace this node with email, a ticket, a CRM field."
},
{
"parameters": {
"content": "## VAT Numbers Go Stale\n\nCompanies deregister, merge or get struck off, and nobody tells you \u2014 it surfaces during an audit. This workflow re-checks the list weekly and reports only the numbers that stopped validating.\n\nAdd a **Vatnode API** credential to the Validate node. Free key, no card: [vatnode.dev/dashboard/api-keys](https://vatnode.dev/dashboard/api-keys).\n\nIf you'd rather not run this yourself, vatnode does the same server-side and posts to a webhook \u2014 see [VAT monitoring](https://vatnode.dev/docs).",
"height": 320,
"width": 460
},
"id": "a3000000-0000-4000-8000-000000000007",
"name": "Read me",
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [
-560,
-400
]
}
],
"connections": {
"Every Monday morning": {
"main": [
[
{
"node": "Customer list",
"type": "main",
"index": 0
}
]
]
},
"Customer list": {
"main": [
[
{
"node": "One item per customer",
"type": "main",
"index": 0
}
]
]
},
"One item per customer": {
"main": [
[
{
"node": "Re-validate against VIES",
"type": "main",
"index": 0
}
]
]
},
"Re-validate against VIES": {
"main": [
[
{
"node": "Keep the problems",
"type": "main",
"index": 0
}
]
]
},
"Keep the problems": {
"main": [
[
{
"node": "Tell the finance channel",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
},
"meta": {
"templateCredsSetupCompleted": false
},
"tags": []
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
vatnodeApi
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About this workflow
Re-check customer VAT numbers on a schedule. Uses n8n-nodes-vatnode, slack. Scheduled trigger; 7 nodes.
Source: https://github.com/vatnode/vatnode-n8n/blob/main/templates/monitor-vat-numbers.json — original creator credit. Request a take-down →
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