# Monthly VAT Re-check: Only the Suppliers That Changed

**Use case:** 

Run this on a monthly schedule and it returns only the VAT numbers whose status or registered name has moved since the last run, so a clean month produces an empty dataset instead of the same list again. The first run stores a baseline. A supplier whose registration was cancelled shows up the month it happens, which is the point: nobody tells you when a counterparty deregisters.

## Input

```json
{
  "vatNumbers": [
    "IE6388047V | Google Ireland Limited",
    "DE811569869 | Zalando SE",
    "IT00488410010 | TIM S.p.A.",
    "PL5260250995 | Orange Polska",
    "SE556036079301 | Saab AB",
    "ES A28017895 | Telefonica",
    "EL094019245"
  ],
  "nameMatchThreshold": 60,
  "alertsOnly": true,
  "onlyChangesSinceLastRun": true,
  "trackChanges": true,
  "watchlistName": "monthly-review",
  "maxVatNumbers": 500
}
```

## Output

```json
{
  "fullVatNumber": {
    "label": "VAT number"
  },
  "validationState": {
    "label": "Verdict"
  },
  "registeredName": {
    "label": "Registered name"
  },
  "expectedName": {
    "label": "Your name on file"
  },
  "alerts": {
    "label": "Alerts"
  },
  "_change": {
    "label": "Change"
  },
  "checkedAt": {
    "label": "Checked at"
  }
}
```

## About this Actor

This example demonstrates how to use [EU VAT Number Validation: Bulk VIES Check & Supplier Monitor](https://apify.com/fayoussef/eu-vat-compliance-monitor.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/fayoussef/eu-vat-compliance-monitor.md) to learn more, explore other use cases, and run it yourself.


## How to integrate an Actor?

This Task's input is already configured above. Use it as-is rather than inventing a new one.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/fayoussef/eu-vat-compliance-monitor.md

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).