*MCP › Reference › Finance › Supplier invoices*

# Validate a supplier invoice

> Approves a draft received invoice: checks the required fields, assigns it an internal number from the series and locks it as immutable.

> **Not reversible:** This tool cannot be undone.

> **Requires human confirmation:** Put this tool on your client's “ask before running” list. The annotations are hints that the server declares, not guarantees: do not decide the approval from `destructiveHint` alone. The server flags this tool with `_meta["anthropic/requiresUserInteraction"]`, which clients that honor it use to ask a person before every call.

> **Server annotation:** It validates a document that is then locked. Today the validation does not send the document to the tax agency, but it cannot be undone.

Only from `draft`; from any other status it rejects the request without touching anything. It requires supplier, invoice file, date, at least one line and a total amount greater than zero; if any is missing it responds 409 `conflict` listing what a validatable invoice needs (it does not name the missing one: complete the invoice in the app). There is no tax compliance: the invoice is received, not issued. It takes no body. It requires the purchases add-on (402 without it). Returns the full invoice, the same projection as its GET.

TOOL `filmo_supplier_invoices_validate` · `supplier-invoices:write` · 120/min · May need an add-on · Server annotation: Destructive · Requires human confirmation · Not reversible

## Arguments

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `supplierInvoiceId` | string | Yes | Supplier invoice identifier. |
| `idempotencyKey` | string | No | Idempotency key chosen by the client (a UUID is recommended). Repeating the same key with the same arguments within 24 h returns the stored response without executing again; with different arguments it responds 422. It is the safe way to retry after a network failure. |
| `ifMatch` | string | No | Optimistic locking: the meta.etag you got from the detail read of this resource (or "*"). If the resource changed since, the call fails with 412 precondition_failed before writing anything; read it again and retry. Omit it to write unconditionally. |

## Result

On success the result carries `structuredContent` with `data` and `meta`. These are the attributes of `data`.

| Name | Type | Description |
| --- | --- | --- |
| `id` | string | Supplier invoice identifier. |
| `supplierInvoiceNumber` | string | Number the supplier put on the invoice; null if it was not recorded. |
| `status` | string | Status of the invoice within the purchasing cycle. |
| `createdAt` | string<date-time> | Creation date in ISO 8601 UTC. |
| `updatedAt` | string<date-time> | Last modification date in ISO 8601 UTC. |

*Call · filmo_supplier_invoices_validate*

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "filmo_supplier_invoices_validate",
    "arguments": {
      "supplierInvoiceId": "supp_8f2a1c"
    }
  }
}
```

*Result (generated from the schema)*

```json
{
  "structuredContent": {
    "data": {
      "id": "id_8f2a1c",
      "supplierInvoiceNumber": "<supplierInvoiceNumber>",
      "status": "<status>",
      "createdAt": "2026-09-01T08:00:00Z",
      "updatedAt": "2026-09-01T08:00:00Z"
    },
    "meta": {
      "idempotencyKey": "<the key you sent, or the one the server generated>",
      "rateLimit": {
        "limit": 120,
        "remaining": 119,
        "reset": 42
      }
    }
  }
}
```

## The same operation by REST

This tool runs [`POST /api/v1/supplier-invoices/{supplierInvoiceId}/validate`](https://docs.filmo.io/rest-api/endpoint-reference/supplier-invoices/validate-a-supplier-invoice).

---

Canonical URL: https://docs.filmo.io/mcp/tools/supplier-invoices/filmo-supplier-invoices-validate  
Last updated: 2026-10-25