IRP & NIC Approved Integration

Automated E-Invoicing API for Enterprise ERPs

Generate IRNs and dynamic QR codes in milliseconds. Integrate Excellon EXACT's high-speed e-Invoicing API directly into your SAP, Oracle, or custom billing system for 100% compliance.

Talk to Expert
Tax Invoice #
INV-2026-8942
Billed To
Enterprise Corp Ltd.
Invoice Value
₹ 1,45,000.00
Invoice Reference Number (IRN)
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
IRP Digitally Signed
Core Capabilities

Seamless IRN & QR Code Automation

Our APIs are built to handle the highest transaction volumes, ensuring your invoices are legally compliant and digitally signed by the IRP in milliseconds.

Real-Time IRN Generation

Instantly generate the 64-character Invoice Reference Number (IRN) and dynamic B2B QR code the moment an invoice is approved in your ERP.

Auto E-Way Bill Linking

Pass a single payload to the EXACT API to simultaneously generate the e-Invoice IRN and the linked E-Way Bill (Part A & B) without double data entry.

B2B, B2G & Export Ready

Full compliance support for all mandated transaction types, including Business-to-Business, Business-to-Government, SEZ, and Export invoices.

Bulk IRN Processing

Designed for enterprise scale. Easily process thousands of invoices simultaneously during month-end surges using our high-throughput batch APIs.

Cancellations & Reversals

Automate IRN cancellations natively from your billing system. Cancel erroneous invoices instantly within the mandated 24-hour government window.

Custom Print & PDF Support

Retrieve the digitally signed QR code and embedded IRN to render 100% compliant PDF invoices in your exact corporate branding and format.

IRP Architecture

Secure Data Flow to Government IRPs

Watch how your invoice data is securely transmitted, encrypted, and instantly signed by the Invoice Registration Portal (IRP) directly from your ERP.

Your ERP System

SAP S/4HANA
Oracle Cloud
MS Dynamics
TallyPrime
Zoho Books
Custom Billing
EXACT API Gateway
High-Speed JSON Validation

Government IRP

Real-time connection with official Invoice Registration Portals (IRP) to generate the 64-character IRN and signed QR code.

Technical FAQs

Common Questions About e-Invoice APIs

An e-Invoicing API creates a secure, automated bridge between your billing software (like SAP or Oracle) and the Government's Invoice Registration Portal (IRP). Enterprises need it to instantly validate B2B transactions, generate the mandated 64-character Invoice Reference Number (IRN), and receive a digitally signed QR code without manual portal data entry.
Under current GST mandates, IRN generation is only required for B2B, B2G, and Export invoices. However, for B2C invoices, enterprises with a turnover above the specified threshold must generate dynamic B2C QR codes. The EXACT API handles logic routing for both requirements seamlessly.
The EXACT e-Invoicing API is optimized for enterprise scale with extremely low latency. Once your ERP sends the JSON payload, our gateway authenticates and retrieves the signed IRN and QR code from the IRP in milliseconds, ensuring your dispatch vehicles are never delayed.
Yes. Our API supports consolidated payloads. By passing the transporter details along with the invoice data, the API will communicate with both the IRP and the NIC portals to simultaneously generate the e-Invoice IRN and the linked E-Way Bill in a single automated request.
No database restructuring is required. We provide flexible REST APIs and standard JSON schema mapping. For major ERPs like SAP and MS Dynamics, we offer pre-built integration connectors that map your existing data fields directly to the government's required schema.