e-Way Bill API for SAP — S/4HANA, ECC

What is the e-Way Bill API for SAP — S/4HANA, ECC?

The WhiteBooks e-Way Bill connector for SAP supports S/4HANA, ECC 6.0+, and ABAP-based custom logistics modules. It auto-generates EWB when a delivery document is released, fetches signed EWB confirmation, and writes the EWB number back to the delivery for printing on the bill of lading.

For high-volume distribution (>5,000 deliveries/day), the connector batches EWB generation and surfaces NIC rate-limit issues gracefully via SAP transaction monitors.

Quick spec

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

Code examples

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

const res = await fetch('https://apisandbox.whitebooks.in/eway/api/v1/eway/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/eway/api/v1/eway/generate',
    headers={'Authorization': f'Bearer {access_token}'},
    json=payload,
)
data = resp.json()

HttpRequest req = HttpRequest.newBuilder()
    .uri(URI.create("https://apisandbox.whitebooks.in/eway/api/v1/eway/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/eway. Same payload, same response shape.

Frequently asked questions

Explore the full e-Way Bill API

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

Related e-Way Bill API endpoints