e-Invoice API for Microsoft Dynamics 365

What is the e-Invoice API for Microsoft Dynamics 365?

For Dynamics 365 Business Central, the WhiteBooks e-Invoice extension is published on AppSource. It surfaces as the "e-Invoice → Generate IRN" action on sales invoice cards and supports bulk IRN from list views.

For Dynamics 365 F&O, a Power Automate connector enables low-code workflow automation — e.g., trigger IRN generation on invoice posting, fail to retry queue on NIC error, send alert if cancellation window approaching.

Quick spec

• Endpoint: POST /api/v1/irn/generate
• Auth: OAuth 2.0 bearer token
• Production base: https://api.whitebooks.in/einvoice
• Sandbox base: https://apisandbox.whitebooks.in/einvoice
• Format: JSON in / JSON out
• SLA: 99.99% uptime · p95 < 350ms

Code examples

curl -X POST 'https://apisandbox.whitebooks.in/einvoice/api/v1/irn/generate' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{ /* payload */ }'

const res = await fetch('https://apisandbox.whitebooks.in/einvoice/api/v1/irn/generate', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer ' + accessToken,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(payload),
});
const data = await res.json();

import requests

resp = requests.post(
    'https://apisandbox.whitebooks.in/einvoice/api/v1/irn/generate',
    headers={'Authorization': f'Bearer {access_token}'},
    json=payload,
)
data = resp.json()

HttpRequest req = HttpRequest.newBuilder()
    .uri(URI.create("https://apisandbox.whitebooks.in/einvoice/api/v1/irn/generate"))
    .header("Authorization", "Bearer " + accessToken)
    .header("Content-Type", "application/json")
    .post(BodyPublishers.ofString(payload))
    .build();
HttpResponse<String> resp = HttpClient.newHttpClient()
    .send(req, BodyHandlers.ofString());

Integrate in 3 steps

1. Sign up at accounts.whitebooks.in — sandbox credentials issued instantly, no sales gate.
2. Make your first call against the sandbox base URL using the code example above. Validate against your local model.
3. Move to production once your tests pass — switch host to https://api.whitebooks.in/einvoice. Same payload, same response shape.

Frequently asked questions

Explore the full e-Invoice API

This is one endpoint inside the WhiteBooks e-Invoice API suite. See the full documentation — every endpoint, every parameter, every error code.

Related e-Invoice API endpoints