e-Invoice API India for IRN workflows
with less glue code
Generate IRNs, handle cancellation windows, and connect invoice workflows to downstream processes without stitching together separate tools.
e-Invoice API
IRN workflow surface
Bearer
Auth Flow
IRN + QR
Core Output
24 Hours
Cancel Window
IRN to EWB
Linked Flow
e-Invoice API Flow
Understand the complete workflow from authentication to IRN generation and IRN cancellation.
e-Invoice API Workflow
Complete e-Invoice API workflow
Authentication
Auth Token Validity: 1hour (Sandbox), 6hours (Production)
Get GSTIN Details from NIC
(Optional)Sync GSTIN details from GST
(Optional)Generate IRN
PRIMARY ACTION
Get e-Invoice by IRN Number
(Within 72 Hours)Get e-Invoice by Doc Details
(Within 72 Hours)Generate e-Waybill using IRN
Get e-Waybill Details using IRN
OTHER API CALLS
Cancel IRN
(within 24 hours)Get Rejected IRNs
(for failed invoices)Hover over each card to learn more about the API
Available endpoint groups
Core request groups teams typically wire first when rolling out e-Invoice flows.
/einvoice/authenticateGet authentication tokenAuth/einvoice/generateGenerate IRN for invoiceCore/einvoice/irn/{irn}Get e-invoice by IRNCore/einvoice/cancelCancel e-invoiceCore/einvoice/gstin/{gstin}Get GSTIN detailsUtility/einvoice/ewaybillGenerate e-waybill from IRNIntegrationBuilt for Every Business
ERP Integration
Seamlessly integrate with SAP, Oracle, Tally, and other ERP systems for automated invoice generation.
Bulk Processing
Generate thousands of IRNs in batch mode with our high-throughput bulk processing API.
e-Waybill Linking
Automatically generate e-Waybills from e-Invoices for seamless logistics compliance.
Questions teams ask before e-Invoice go-live
Clear answers for implementation teams evaluating IRN workflows, ERP fit, bulk handling, and production readiness.
What is an e-Invoice API?
An e-Invoice API helps businesses automate IRN generation and GST-compliant invoice processing in real time.
How does e-Invoice API integration work?
The API connects ERP or billing software with the Invoice Registration Portal for automated invoice validation and IRN generation.
Can PeriOne generate invoices in real time?
Yes, PeriOne supports real-time invoice processing and instant IRN generation.
Does the API support bulk invoice generation?
Yes, PeriOne APIs support bulk e-Invoice generation for high-volume business operations.
Is NIC integration supported?
Yes, PeriOne APIs support GST/NIC integration for seamless e-Invoice processing.
Can e-Invoice APIs integrate with ERP systems?
Yes, PeriOne supports integration with SAP, Oracle, Tally, and custom ERP platforms.
Does PeriOne provide invoice validation?
Yes, the API validates invoice data before IRN generation to reduce compliance errors.
Is e-Invoice API documentation available?
Yes, PeriOne provides detailed e-Invoice API documentation and developer integration support.
Ready to validate your e-Invoice rollout?
Start in sandbox, confirm the document flow, and move to production once the implementation is mapped the way your team needs it.