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Every company aims for predictable revenue, smooth compliance, and fewer surprises during audits. E-invoicing software in India has become a key part of achieving that stability. With the introduction of IRP validation, invoices can no longer be treated as a month-end task. They need to be processed in real time. With turnover thresholds tightening and rules like the 30-day e-invoice upload window rule coming into effect, businesses are rethinking how invoices are created, validated, and tracked. A structured digital approach has moved from being optional to essential for smooth GST e-invoice compliance. What is E-Invoicing? E-invoicing under GST refers to a system where B2B invoices and certain other documents are validated electronically by the Invoice Registration Portal (IRP) before they are considered valid. Companies still generate invoices through their accounting or ERP systems. The difference now is that instead of sending them directly to customers and keeping them in isolated records, the invoice information is submitted in a standardized format to an Invoice Registration Portal (IRP). After verification, each invoice is assigned a unique Invoice Reference Number (IRN) along with a QR code. To ensure seamless compliance across systems, businesses must ensure their invoice data aligns with the e-invoice schema mandated by the GST Council, as inconsistencies can directly lead to IRP rejection. This approach brings consistency across businesses, allows systems to read invoices automatically, and enables seamless data sharing with GST portals like e-way bills and return filing platforms. Who Must Generate an E-Invoice? Currently, any business with an aggregate turnover of 5 crore or more in any financial year must generate e-invoices for B2B invoice compliance in India. Mid-sized companies that were previously outside the mandate are now included due to gradual threshold reductions. Companies often miss compliance because they are unaware that even crossing the threshold in a single past financial year triggers permanent applicability of GST e-invoice compliance. Some sectors remain exempt, including: Banking and financial services Insurance NBFCs Goods transport agencies Passenger transport services Cinema ticketing Once a business crosses the threshold in any year, the requirement continues in subsequent years, even if turnover drops below the limit. Where to Generate an E-Invoice? Businesses must generate invoices through: Their ERP system Billing software Custom invoicing tools Connected GSP platforms The e-Invoice Government Portal The invoice is submitted digitally to the IRP using secure APIs. Manual entries are not permitted. Why Dedicated E-Invoicing Software Matters? Many companies assume ERP systems handle e-invoicing automatically. The reality is that ERPs generate invoices, but validation, IRP integration, and compliance monitoring require a dedicated software layer. The benefits include: 1. Real-time validation Errors like incorrect HSN codes validation, invalid GSTINs, character limit violations, or date format issues can disrupt monthly returns. Automated checks prevent these problems from reaching the IRP. 2. Reliable API connectivity IRP response times can fluctuate during peak hours. A software layer with retry logic and queue management ensures uninterrupted operations. 3. Audit-ready records Every request, response, and amendment is recorded, making audits smoother. 4. Faster month-end processing Validated invoices flow directly into accounting and GST filing modules, reducing reconciliation time. 5. Adaptability to rule changes E-invoicing rules and schema have evolved since launch. A structured software layer adapts automatically, freeing IT teams from manual updates. Benefits of E-Invoicing Software A recent study reveals that Indian companies are leading the way in e-invoicing adoption, with over 80%(1) of invoices received electronically, surpassing the global average. This widespread adoption could unlock significant economic value for Indian firms, potentially saving businesses approximately ₹1.09 crore annually. Using dedicated software instead of manual uploads brings tangible advantages: Accuracy and Error Reduction Schema checks and field validations prevent common mistakes, reduce rejections, and ensure consistent data. Faster Processing and Cash Flow Visibility Invoices are authenticated instantly. Buyers receive verified documents quickly, suppliers experience fewer disputes, and working capital planning becomes more predictable. Lower Compliance Workload Automation reduces repetitive tasks such as e-way bill preparation, reconciliations, and return checks, allowing finance teams to focus on strategy. Stronger Fraud Control Each invoice receives a unique IRN that cannot be reissued, minimizing the risk of fake invoices or inflated claims. Smooth System Interoperability When the ERP follows the e-invoicing schema, data flows cleanly between systems, enabling business scaling without format issues. Better Experience for Vendors and Customers A standard format and prompt delivery reduce disputes, accelerate reconciliations, and improve communication across teams. By standardizing invoice data, organizations also experience smoother GSTR-1 reconciliation, reducing last-minute filing delays. Integrating E-Invoicing Software with ERP Systems For companies using ERP platforms like SAP, Oracle, Microsoft Dynamics, Tally, Odoo, or custom systems, smooth integration is essential. The typical flow is: Invoice is created in the ERP Software extracts required fields in the standard schema Data is sent to the IRP through secure APIs via GSP environment IRP validates the invoice IRN and QR code are returned to the ERP Invoice is updated and shared with the customer Data is automatically pushed to GSTR 1 and e-way bill systems A well-implemented e-invoice ERP integration not only supports real-time IRP validation but also drastically reduces dependency on manual processes during peak filing periods. Choosing the Right E-Invoicing Solution Selecting software is not just a checklist exercise. It defines the reliability of compliance processes. Things to Consider: Compliance readiness  Software must follow official schema and update automatically with new GST rules. Seamless ERP e-invoicing integration Smooth ERP integration with support for bulk operations and real-time data sync. Automation depth Automated IRN generation, cancellation workflows, audit logs, QR code printing, and e-way bill linkage. Scalability Must support multiple branches and GSTINs without rework. Support and service quality Timely technical support is critical for compliance. Data security Encryption, secure APIs, and controlled access are essential. Always verify whether the solution provider offers a dedicated sandbox environment for API testing, which ensures smoother deployment and minimizes production errors. How ExactGST Supports Reliable E- Invoicing Compliance A key decision for any organization is choosing a trusted GSP partner for e-invoicing. ExactGST operates as a Government approved GSP provider

Since the first time when India implemented its Goods and Service Tax regime, it was clear that there would be tectonic shift in how Indian enterprises manage tax compliance. Today, millions of invoices are processed each month with a mandate for enterprises to comply with frequent regulatory updates. Businesses that use large-scale ERP platforms like SAP are at an advantage to fully comply with India’s GST regulations owing to SAP’s automation capabilities, reliability and scalability. Businesses need systems that work well with their ERP environments as compliance frameworks change. Here, SAP-certified GST Suvidha Providers (GSPs) add value by facilitating safe, effective, and instantaneous connectivity between business systems with SAP ERP and the GST Network (GSTN). Understanding ERP and GST Integration ERP systems connect the different functions of a business, including finance, procurement, and operations, within one digital framework. They form the backbone of how data moves across an enterprise. GST compliance, however, introduces additional requirements. Filing returns, reconciling transactions, generating E-Invoices, and managing E-Way bills all require a steady and secure exchange of data with the GSTN. A GST Suvidha Provider bridges this connection. It links your ERP system to the GSTN through approved APIs, allowing data to flow automatically and ensuring accuracy in every submission. For companies using SAP, working with a certified GSP means the entire setup follows SAP’s strict guidelines for performance, reliability, and integration. When GST was introduced, it was predicted that – This projection highlighted how deeply SAP environments are embedded in India’s enterprise ecosystem and why SAP certification for GSPs remains vital for smooth, all scale compliance. 10 Benefits of SAP-Certified GSP Solution for Enterprises  1. Data Security and Reliability Certified GSPs follow strict security standards set by both SAP and GSTN. They use advanced encryption and access control to ensure data remains secure and accurate at every stage. Since the data is never stored the enterprises maintain complete control and ownership of their information, ensuring full compliance with internal and regulatory standards. 2. Accurate and Timely Filings With API-based automation, data moves directly from your ERP(1) to the GSTN and vice-versa. This removes the need for manual uploads and format checks, ensuring your returns are filed correctly and on time. 3. Plug-and-Play Integration Eliminates the need for complex development or maintenance efforts, making integration straightforward and hassle-free for enterprises. 4. System Compatibility Certified GSPs are built to work smoothly with SAP systems. Even when there are version changes or API updates, compliance operations continue without disruption. 5. Operational Efficiency Automation reduces repetitive tasks so your finance teams can focus on analysis and governance. This leads to faster processing and fewer human errors. 6. Scalability and Performance These systems can manage large transaction volumes and are tested for stability under heavy workloads. They are well suited for enterprises operating in multiple regions. 7. Audit and Traceability Every request is recorded, creating a complete audit trail for internal and external reviews. This transparency builds trust and strengthens compliance confidence. 8. Regulatory Confidence SAP certification assures that the GSP follows tested protocols and is aligned with both SAP and GSTN compliance frameworks. Enterprises can be confident that filings, e-invoices, and e-way bills are processed without technical disruptions. 9. Interoperability Assurance The certification guarantees that the GSP works seamlessly with SAP environments (ECC, S/4HANA), allowing organizations to scale compliance without integration disruptions. 10. Regulatory Agility Since SAP-certified GSPs are required to maintain compatibility with evolving GSTN and SAP updates, enterprises stay future-ready without frequent custom reconfigurations. For enterprises, these capabilities directly translate into smooth automation reduced compliance risk, improved governance, and higher operational predictability. Excellon EXACT: SAP-Certified GSP API Solution for Seamless GST Compliance Excellon EXACT is an SAP-certified, GSP API solution designed for enterprises that prioritize security, and operational transparency. It connects SAP systems directly to GSTN, automating GST compliance in India while keeping complete data ownership within the enterprise environment. Key Capabilities Real-time E-Invoice and E-Way Bill Generation Enables instant E -Invoicing and E-Way bill creation, validation, and submission to GSTN, reducing turnaround time and improving accuracy. Automated GST Return Filing Supports end-to-end API-based GST filing for GSTR-1, GSTR-3B, GSTR-9, and other returns, eliminating manual intervention and file uploads. Compatibility Across Systems Works seamlessly with SAP ECC, S/4HANA, and even non-SAP ERP systems, while supporting GST Filing, E-Invoicing, and E-Way Bill processes. Capability for High Transaction Volumes Designed with multi-cloud redundancy and a scalable framework that accommodates millions of transactions with consistent throughput. Secure and Clear Data Transmission Employs a genuine API pass-through model where data is not retained, guaranteeing adherence to enterprise data protection standards. Reliability and Monitoring Offers 99.7+% uptime, comprehensive API audit logs, and real-time system monitoring for operational confidence. With EXACT, enterprises gain a robust compliance infrastructure that ensures reliability, accuracy, and consistency across all GST-related workflows while aligning with SAP’s integration standards. 24*7 Support Expert assistance via email and voice to ensure seamless business continuity. Conclusion Tax compliance today isn’t just about following rules, it’s about staying agile in a digital-first world. For organizations working on SAP, partnering with a certified GSP like Excellon EXACT brings that confidence. It keeps compliance secure, reliable, and scalable, backed by the speed and accuracy that modern businesses rely on. For enterprises still evaluating their options, explore our insights on How to Choose the Best GSP for GST Compliance to make an informed decision. Contact Us Understanding India’s GST 2.0 Reforms and Compliance Framework Download Whitepaper Latest News Unilever CEO sees ‘massive’ opportunities in India amid GST cuts and GDP surge – Telegraph India • December 10, 2025 • News 2 gaming firm owners held for Rs 320 cr GST evasion – Times of India • December 10, 2025 • News LIC receives GST demand order of over Rs 2,370 crore from Maharashtra authorities – financialexpress.com • December 10, 2025 • News Sponsored Ad Edit Template Frequently Asked Questions on SAP-certified GST Suvidha Providers Why should enterprises choose a GSP partner that’s SAP-certified? Choosing an SAP-certified GSP partner ensures that your GST compliance

Managing GST compliance in India requires a structured and technology-driven approach. Frequent regulatory changes, bulk data volumes, and accuracy requirements make it essential for businesses to adopt  for compliance automation. GST Suvidha Providers (GSPs) bridge the gap between enterprise systems and the Tax authority portal/system  using secure APIs and services tailored for Indian tax regulations. What is a GST Suvidha Provider (GSP)? A GST Suvidha Provider (GSP) is an authorized entity by GSTN that facilitates secure and scalable access to GST services. GSPs serve as technical enablers by providing the digital infrastructure for enterprises to connect their application systems directly with GSTN and NIC servers. This setup allows businesses to automate key compliance functions such as preparing and filing GST returns, generating e-invoices, processing e-way bills, and validating tax data in real time. By acting as a middleware layer, a GSP eliminates the need to manually operate through the GSTN portal, enabling faster, more reliable, and streamlined compliance management. Services Offered by a GST Suvidha Provider (GSP) API access to file GSTR-1, GSTR-3B, GSTR-9, and other returns In addition to above, provides API access to accommodate compliance for E-Invoice and E-Way Bill services Authentication and secure transmission of encrypted tax/invoice data to GSTN/NIC Automated reconciliation of purchase (GSTR-2A/2B) and sales (GSTR-1) data via GSTN APIs Seamless integration with Application Service Providers (ASPs) and ERP platforms Handled cryptography, in case of special requirement How to Choose the Right GST Suvidha Provider (GSP) Selecting a GSP involves a technical and operational evaluation. Begin with analyzing your transaction volume, ERP environment, internal compliance workflow, and support needs. A good GSP should offer comprehensive API coverage, stability, and regulatory alignment. 1. API Capabilities Ensure the GSP provides high-performance APIs with low response times for large-volume processing. 2. Data Security Look for encryption standards, firewall configurations, and access protocols in line with GSTN guidelines. 3. ERP Integration with Support Prefer Choosing  a GSP that is certified or proven for integration with these platforms such as SAP ERPs, so that implementation is smoother, custom development is minimized, and real-time compliance  data synchronization with GSTN/NIC is supported natively. 4. Update Mechanism Verify if the GSP applies real-time regulatory updates to remain compliant. 5. Audit Logs and Reporting Ensure detailed API count logs and dashboards are available for traceability and metering purposes. 6. Deployment Flexibility Support for cloud-native and on-premises deployment options must be available. 7. Uptime Assurance Prefer GSPs with at least 99.9% uptime records backed by SLA. 8. Technical and Functional Support Confirm the availability of 24×7 voice and email support with escalation procedures. GSP services are suitable for: Enterprises handling complex, any transaction volumes across single or multiple regions operations. Any ERP service provider such as SAP (ECC, S4HANA etc.), and oracle, etc. Organizations with internal tax teams and automated reporting requirements. Suitable for application service providers managing GST filings, E-Invoicing, E-Way Bill automation for clients. Conclusion GSP selection is a strategic decision. It must align with the organization’s IT architecture, compliance volume, and operational objectives. The goal is to minimize manual intervention, ensure regulatory accuracy, and maintain data integrity. Excellon EXACT is an  PASS Through API solution also certified by SAP  designed to handle GST compliance at ultra high scale . It is compatible with any ERP platforms, with different SAP versions (including SAP ECC, S/4HANA, etc) as well as non-SAP systems directly with the GSTN using secure API channel. EXACT offers: Real-time e-invoice and e-way bill generation API-based return filing of GST (such as GSTR-1, GSTR-3B, GSTR-9, etc.) Bulk transaction volume  handling capabilities using multi way redundant cloud infrastructure.  Plug-n-play  API solution according to GST compliance. API access with audit logs for API metering. 99.9% Uptime Businesses using Excellon  EXACT solution achieved streamlined compliance with minimal operational overhead. Contact Us Understanding India’s GST 2.0 Reforms and Compliance Framework Download Whitepaper Latest News IndiGo hit with ₹58.75 crore GST penalty – ET Infra • December 12, 2025 • News Unilever CEO sees ‘massive’ opportunities in India amid GST cuts and GDP surge – Telegraph India • December 10, 2025 • News 2 gaming firm owners held for Rs 320 cr GST evasion – Times of India • December 10, 2025 • News Sponsored Ad Edit Template Frequently Asked Questions on GST Suvidha Provider (GSP) What makes Exact GST the best GSP solution? Exact GST differentiates itself as an excellent GSP solution through a combination of: SAP-certification, which lends credibility and ensures robust integration capability with large ERPs. Hosting on Microsoft Azure, providing enterprise grade infrastructure, high uptime (99.9%), security, scalability, and reliability. End-to-end GST automation, supporting e-invoicing, e-way bills, return-filing, etc., so clients can manage much of the compliance lifecycle from one platform. Configurable to business processes, meaning the solution can adapt to the client’s flows, rather than forcing them to adapt to rigid workflows. Strong reliability and high availability, so businesses can depend on it during critical compliance windows. Expert support and compliance‐updates, ensuring that changes in GST law, rules, formats etc. are absorbed rapidly, reducing compliance risk for clients. What does a GST Suvidha Provider (GSP) do, and how does ExactGSP fulfil this role? A GSP acts as a bridge between businesses and the GST Network (GSTN), offering secure APIs and infrastructure to automate tasks like registration, invoice uploading, return filing, e-invoicing, e-way bills, etc. ExactGSP (from Excellon EXACT) is SAP-certified, hosts on Microsoft Azure, supports integration with existing ERPs, and offers reliable connectivity to the GST system. How does ExactGSP help with integration into existing systems (ERPs etc.)? ExactGSP provides interfaces/APIs that connect with a company’s existing ERP or billing systems. This allows automatic or semi-automatic uploading of invoice data, smoother data flow, and reduced manual intervention. Because it is SAP-certified and designed to be configurable per business process, it can adapt to the customer’s workflow. How does ExactGSP ensure uptime, reliability, and timeliness of compliance tasks? ExactGSP offers very high uptime (e.g. ~99.9%), ensuring that filings, invoice registrations, etc. can be done when needed without system downtime. It keeps