SAP Business One E-Invoice Integration - Auto IRN Generation via IRP
The SAP Business One E-Invoice connector generates IRN e-invoices via the GSTN-authorised IRP the moment an A/R invoice is added in SAP B1. QR code and IRN are stamped back on the invoice PDF within seconds. The 24-hour cancellation window is surfaced with a one-click cancel option, and e-way bills are generated from the same trigger when delivery details cross the state EWB threshold. HSN and SAC code auto-mapping folded into every voucher.
Auto-generate IRN e-invoices from SAP Business One A/R invoices via IRP — QR code stamped on invoice PDF, 24-hour cancellation window handled, e-way bills tied in.
IRN generated within seconds of A/R invoice add
Invoice prints IRN-ready with QR code stamped by the connector
One-click cancellation within the IRP window
Parallel pipelines per GSTIN with clean statutory boundaries
What this connector does
IRN e-invoicing is mandatory for every Indian business above the current turnover threshold. The SAP Business One India localisation package captures GST-tagged invoices but does not talk to the IRP for IRN generation. SAP B1 customers work around this with expensive middleware (SAP Cloud Integration Suite) or standalone IRP providers (ClearTax, IRIS, Masters India) that require CSV export from SAP B1, upload to the tool, retrieval of IRN/QR, and re-entry into SAP B1 as a text field. E-way bills are then generated separately on the EWB portal using data re-entered from SAP B1. Multi-GSTIN groups end up running one IRP configuration per GSTIN, usually managed by separate operators, with no unified control plane.
This connector fixes that by wiring the IRP Public API and the NIC E-Way Bill Portal API directly to SAP B1 A/R invoices. Every A/R invoice added in SAP B1 is queued for IRN generation via the IRP within seconds. The API call carries the invoice number, GSTIN, HSN/SAC codes, tax breakdown, buyer address, and item lines. The IRN, QR code, and acknowledgement number come back and are written onto the SAP B1 invoice document — the invoice PDF gets stamped with the QR code so it prints IRN-ready.
E-way bills are triggered from the same event when the invoice value crosses the state EWB threshold (currently Rs 50,000, varying by state) and delivery details are attached. The EWB number is written back to the SAP B1 invoice document and is available for driver dispatch. Reverse charge mechanism (RCM), export invoices with LUT number for zero-rated supplies, and multi-GSTIN group setups are handled natively — each GSTIN gets its own IRP pipeline through a unified control plane.
The 24-hour IRN cancellation window is surfaced in the dashboard with a countdown and a one-click cancel option that talks back to the IRP. After 24 hours, cancellations require a credit note (per GSTN rules) which the connector auto-queues; the credit note then flows through GSTR-1 as an outward supply adjustment via the shipped SAP B1 GST Portal connector.
Both SAP B1 for SQL Server and SAP B1 for HANA are supported. The connector uses the Service Layer for HANA and DI-API for SQL Server. The Perimattic bridge deploys inside your SAP B1 network for the required API access, and read/write scopes are limited to A/R invoices, related credit notes, and dispatch details — nothing else. Audit logs per IRN and per EWB are retained per statutory retention period.
At a glance
- Category
- compliance
- Capabilities
- 10
- Synced data types
- 4
- Setup time
- ~5 minutes
What changes when you plug ERPPlugs in
See how automation transforms your SAP Business One-E-Invoice/E-Way workflow.
| Task | Manual Integration | ERPPlugs |
|---|---|---|
| IRN generation | A/R invoices generated in SAP B1 exported to CSV daily and uploaded to a third-party IRP tool | Every A/R invoice added in SAP B1 auto-triggers IRN generation via IRP within seconds |
| QR code stamping | IRN and QR code retrieved from the IRP tool and re-entered into SAP B1 as a text field | IRN, QR code, and acknowledgement number stamped directly onto the SAP B1 invoice PDF |
| E-way bill generation | E-way bills generated on the EWB portal separately, using data re-entered from SAP B1 | E-way bill auto-generated from the same trigger when delivery details cross the state EWB threshold |
| IRN cancellation window | Cancellation within the 24-hour window tracked in a spreadsheet — often missed | Cancellation window surfaced in the dashboard with a one-click cancel — post-window auto-queued as credit note |
| Multi-GSTIN pipelines | Multi-GSTIN groups run one IRP configuration per GSTIN, managed by separate operators | Multi-GSTIN groups run parallel IRN pipelines per GSTIN through a unified control plane |
Built for teams that need reliable automation
The SAP Business One <-> E-Invoice/E-Wayconnector fits into finance, ops, and revenue teams that have outgrown copy-paste — the ones whose month-end close should not depend on a spreadsheet, whose ledger accuracy should not depend on human vigilance, and whose sales velocity should not stall behind an accountant's inbox.
Below are the roles that get the fastest return the moment this connector goes live. If yours is on the list, the payback is typically visible in the first billing cycle.
Finance Controller
Owns GST compliance for a SAP B1 mid-market group and needs IRN e-invoicing to work inline with A/R invoice generation, not as a post-processing step.
IT / SAP Consultant
Manages the SAP B1 India localisation for multiple clients and wants IRN + EWB automated without deploying middleware (SAP Cloud Integration Suite) or maintaining CSV export scripts.
Group CFO
Runs a multi-GSTIN manufacturing or distribution group and needs unified visibility into IRN status, EWB status, and cancellation windows across all group GSTINs.
How data flows and what gets synced
The bridge between SAP Business One and E-Invoice/E-Way, and the exact records that move across it.
SAP Business One
ERPPlugs Engine
E-Invoice/E-Way
| Data Type | Direction | Frequency |
|---|---|---|
| A/R Invoice → IRN | SAP B1 → IRP → SAP B1 | Real-time on invoice add |
| E-way bill | SAP B1 → EWB Portal → SAP B1 | Real-time on delivery details attach |
| IRN cancellations | SAP B1 → IRP | On-demand (24-hour window) |
| Credit notes for late cancellations | SAP B1 → IRP | Post-24-hour |
Alternative SAP Business One <-> E-Invoice/E-Way integrations available to Indian businesses, and where each fits.
| Connector | Type | E-Invoice/E-Way Support | Typical Capabilities |
|---|---|---|---|
| SAP Business One ↔ E-Invoice / IRPThis page | Native ERP connector | ✓ Native | Real-time IRN generation via IRP on A/R invoice add, QR code and IRN stamped back on SAP B1 invoice PDF, E-way bill generation with EWB portal integration |
| SAP Integration Suite (native) | Enterprise integration platform | Full (custom build required) | — |
| APPSeCONNECT | iPaaS platform for SAP B1 | Full | — |
| Celigo integrator.io | iPaaS platform | Via SAP B1 adapter | — |
| Boomi | Enterprise middleware | Via SAP B1 connector | — |
| Jitterbit | Enterprise iPaaS | Via SAP B1 adapter | — |
Common automation scenarios
Real workflows this connector automates for you.
When
A/R invoice added in SAP B1 with GST-tagged line items
IRN generation triggered via IRP within seconds; QR code and IRN stamped onto invoice PDF
When
Delivery details attached to an A/R invoice above the EWB threshold
E-way bill auto-generated via EWB Portal API and linked to the invoice
When
A/R invoice cancelled within 24 hours of IRN generation
One-click cancellation talks to IRP and voids the IRN; SAP B1 A/R invoice reversed
When
A/R invoice cancelled after the 24-hour window
Credit note auto-queued for the offset; flows through GSTR-1 as outward supply adjustment via the shipped GST Portal connector
What's included
Everything this connector automates out of the box, no extra setup required.
Key Benefits
What changes for your team once this connector goes live.
IRN in Seconds
Real-time generation, no CSV, no export.
QR on PDF
Invoice prints IRN-ready with QR stamp.
Cancellation Window
24-hour window managed with one-click cancel.
EWB Tied In
E-way bills generated from the same trigger.
Try the SAP Business One ↔ E-Invoice / IRP Connector Free
Start with 1 connector and 100 transactions/month — no credit card required. See real data flowing between SAP Business One and E-Invoice/E-Way inside 5 minutes.
Compliance-ready. Live in minutes.
What you get out of the box for statutory compliance — and the exact steps to go live.
Compliance & Compatibility
SAP Business One
SAP Business One 10.0 and above (SQL Server and HANA), India localisation package
E-Invoice/E-Way
GSTN IRP Public API, NIC E-Way Bill Portal API, multi-GSTIN registrations per group entity
Setup in Minutes
Register GSTINs and IRP
Register each GSTIN and enable IRP API access. The Perimattic bridge deploys inside your SAP B1 network for DI-API or Service Layer access.
Map B1 branches to GSTINs
Map each department or business partner in SAP B1 to the correct GSTIN so IRN generation runs per correct filer.
Configure HSN and RCM matrices
Verify the HSN codes and reverse-charge scenarios in SAP B1 match the current GST portal schedules.
Backfill existing invoices
For SAP B1 customers migrating from manual IRP tools, backfill up to 6 months of A/R invoices that were IRN-stamped externally.
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Frequently Asked Questions
The SAP B1 GST Portal connector handles GSTR-1, GSTR-3B, and GSTR-2B reconciliation. This one handles IRN e-invoicing and e-way bills. Together they close the entire enterprise GST loop for SAP B1 customers. You can install both — they share the same Perimattic bridge, the same audit trail, and the same multi-GSTIN group configuration.
The GSTN allows IRN cancellation within 24 hours of generation. The connector surfaces every generated IRN in the dashboard with a countdown to the cancellation deadline and a one-click cancel option that talks back to the IRP. If cancellation is needed after 24 hours (typical when a buyer disputes an invoice weeks later), the connector queues a credit note for the offset — which then flows through GSTR-1 as an outward supply adjustment.
Yes. Both SAP B1 for SQL Server and SAP B1 for HANA are supported. The connector uses the Service Layer (HANA) or DI-API (SQL) for read/write depending on the deployment.
IRN generation is only mandatory for businesses above the current turnover threshold (Rs 5 crore as of 2026, expanding downward periodically). The connector reads your turnover flag from SAP B1 and only enforces IRN generation for GSTINs above the threshold. Voluntary generation is available for GSTINs below the threshold if you want to future-proof.
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