Expert Required: Build ERP–Tally Middleware with Master Mapping & B2B/B2C Sales Sync -- 2

@joomextensions

GOFFY Hello, I have hands-on experience building production-grade ERP → Tally integrations using Tally XML with audit-safe logging and GST-compliant voucher structures. I’ve integrated with Tally ERP 9 and Tally Prime, including sales voucher sync, error handling, and duplicate prevention. I’ve implemented ERP to Tally sales sync earlier where masters (party, item, ledger, GST) were dynamically mapped via a UI-driven mapping layer, not hardcoded. For GST compliance, I follow correct voucher types, tax ledgers, rate breakdowns, and HSN-wise reporting as per Tally standards. I recommend .NET Core for this middleware due to stability, background services, structured XML handling, and enterprise-grade error control. Expected timeline: 8–10 weeks with milestones. Regards, Harsh Thoriya

@ssquare489

GOFFY I am Sumit Joshi from Sacesta Technologies. Proposed architecture • Standalone middleware service, API driven and configurable • Node.js backend preferred for flexibility, async processing, and easier ERP integrations • Secure REST APIs between ERP and middleware • Tally integration via XML over HTTP with controlled push and response parsing • Persistent audit database for sync logs and voucher references Core implementation • UI based master mapping for parties, items, ledgers, and GST taxes stored as mapping tables • No hardcoding, mappings editable and versioned • Separate B2B and B2C sync pipelines selectable per run • Voucher creation with correct GST breakup, tax ledgers, rounding, and references • Duplicate prevention using ERP invoice IDs and Tally voucher GUIDs • Full failure handling with retry, partial rollback, and readable error logs Screening answers • Integrated with Tally ERP 9 and Tally Prime • Yes, implemented ERP to Tally sales voucher sync for B2B and retail flows including GST • Master mapping handled via UI driven mapping tables stored in middleware DB • GST ensured through correct ledger mapping, tax calculation, and voucher structure validation • Recommend Node.js for async sync, queue based processing, and easier scaling

@NEHABHAT92

GOFFY, As a team with ample experiences in accounting domain middleware and web development, my colleagues and I believe we are the perfect partner for your ERP-Tally Middleware project. With over 9 years of practical background in both web and mobile development, we have created numerous complex and scalable systems with similar requirements to yours. Being well adept in Node.js plus a profound knowledge of API-driven applications, we assure you a reliable and high-performing solution aligning perfectly with your needs. Not only have we worked extensively on Tally integrations involving XML, but we've successfully implemented ERP→Tally sales voucher sync before. We are skilled at handling crucial features such as GST-compliant accounting flows and error handling. Your critical feature, Master Mapping has our special interest. Our past projects similar to yours taught us the significance of maintaining an audit trail for transactions, hence guarantee an end-to-end transactional history maintenance. We understand deadlines and are ready to meet your estimations head-on. To ensure a seamless handover upon completion; this includes the working middleware application, its source code along follows a detailed documentation, deployment & configuration guide alongside the necessary Knowledge Transfer session .

@mayankinnovative

GOFFY, DISCONNECTED ERP AND TALLY DATA WORKFLOWS You need a reliable middleware that synchronizes master records and sales data between your ERP and Tally for both B2B and B2C operations. Without a robust integration layer, data remains inconsistent, manual reconciliation becomes necessary, and business processes slow down due to errors and delays. DEVELOP ERP–TALLY MIDDLEWARE WITH MAPPING & SYNC I will build a **middleware solution** that connects your ERP and Tally systems with accurate master data mapping, automated B2B/B2C sales synchronization, and error-resilient workflows. This includes designing mapping logic for customers, products, prices, and taxes; setting up bidirectional sync; conflict detection and handling; and scheduling real-time or batch syncs as needed to ensure up-to-date records across systems. CONSISTENT DATA, FASTER OPERATIONS & REDUCED ERRORS You will receive a dependable middleware platform that keeps master data aligned and sales transactions synchronized between ERP and Tally. The final result will improve operational efficiency, reduce manual data reconciliation, and ensure your financial and sales records remain consistent and accurate across platforms. Thanks

@anilptk

GOFFY Hello! I am excited about the opportunity to work on your project that requires expertise in Tally integrations. As a seasoned freelancer with a background in developing middleware applications, I am confident in my ability to meet your requirements for seamlessly integrating your custom ERP with Tally. I understand the importance of creating a stable, auditable, and scalable solution, and I am eager to tackle the challenge. Thank you for considering my proposal. Screening Questions: 1. Can you provide more details about the specific data mapping requirements between your ERP and Tally? 2. How do you envision handling the confirmation/status feedback from Tally for synced transactions within the middleware application? Regards, anilptk

@Rahulsingh5xz

GOFFY Hello, I’m Rahul Singh from Team Velora, running successfully for 3+ years with hands-on experience in Tally XML–based ERP integrations. We clearly understand your requirements for a production-grade middleware including master mapping, GST-compliant voucher sync, and audit-safe architecture. Let’s discuss the project details further in the chat box.

@jagratip3

Hello, I have hands-on experience building production-grade middleware integrating custom ERPs with Tally, including master data mapping, B2B/B2C sales sync, and GST-compliant voucher posting. Screening Questions: Tally versions: Integrated with Tally ERP 9 and TallyPrime using XML API. ERP → Tally sync: Implemented voucher push workflows handling B2B and B2C sales, maintaining referential integrity and audit logs. Master mapping: UI-driven mapping for customers, items, ledgers, and GST/tax codes; fully configurable, no hardcoding. GST compliance: Automatically populate Tally voucher GST fields per sale type, validate HSN codes, and reconcile with ERP tax entries. Tech stack: Recommend .NET Core for robust API-driven architecture, strong type safety, and seamless Tally XML handling; Node.js possible if preferred for MERN teams. Approach: Standalone, API-driven middleware; handles validation errors, duplicates, partial failures; maintains full audit trail; includes source code, deployment guide, and knowledge transfer session. Timeline: 6 weeks realistic for full implementation, including master mapping UI, B2B/B2C sync, GST compliance, error handling, and testing. I have successfully faced challenges like partial voucher failures, duplicate detection, and complex ledger mappings in prior integrations and can deliver a stable, auditable, production-ready system. Best regards,

@MuhammadAsad108

✔ I deliver 100% functional, production-ready Tally integrations Workflow Diagram ERP Data ⟶⟶ Master Mapping UI ⟶⟶ Sales Data Selection (B2B/B2C) ⟶⟶ Voucher XML Generation ⟶⟶ Push to Tally via API/XML ⟶⟶ Confirmation & Audit Trail ⟶⟶ Error Handling & Reporting Key Highlights ✔ Proven Tally integration experience — XML/API-based voucher push with referential integrity and duplicate prevention. ✔ Master mapping UI — dynamic, configurable mapping for Customers, Items, Ledgers, and GST structures. ✔ B2B/B2C data handling — selectable dataset sync with correct voucher structure for each type. ✔ GST-compliant vouchers — validation at middleware level before Tally push, ensuring correct tax calculations. ✔ Audit trail & error logging — all transactions logged with user, date, voucher ID, and error messages if any. ✔ Scalable middleware architecture — .NET Core backend (or Node.js if preferred), API-driven, modular, and secure. ✔ Deployment-ready — full source code, documentation, and knowledge transfer included.

@sumitwebrainbows

As an expert .NET developer with a strong focus on API-driven software architecture, I am confident that I am the ideal candidate for this project. My team and I have extensive experience in building ERP-to-accounting system middleware, having successfully executed many similar projects over the past 14 years. I must clarify that my relevance to your project goes beyond mere generic know-how; we have hands-on experience integrating specifically with Tally via its XML/API interfaces, just as you've required. Not only do we understand the unique challenges involved but also have developed reliable solutions to handle them. The paramount significance of GST compliance is well-understood by us and worth highlighting. We have in-depth knowledge of GST-compliant accounting flows and to ensure adherence, we follow rigorous testing and validation procedures at each stage of development. About the tech stack, while both .NET Core and Node.js are powerful options with their respective merits, I suggest using .NET Core for its compatibility advantages with Tally framework. This reduces any potential points of failure and enhances the overall stability and scalability of your middleware solution. Let's join hands now to create a robust, scalable, GST-compliant ERP-Tally Middleware that elevates your business performance seamlessly!

@vardanagr67

Hi, I am Vardan Agrawal. With 6+ years of solid professional experience in JavaScript, I bring a strong track record of delivering high-quality, reliable, and results-driven solutions. I’ve reviewed your requirements thoroughly, and I’m confident I can execute this project with precision and consistency — exactly the way you need. I also have direct, proven experience working with the exact skills you’ve listed — JavaScript, .NET, Software Architecture, ERP, MySQL, Node.js, Tally Definition Language, .NET Core, Electron JS, API Development — and have successfully delivered similar projects for clients across different industries. My focus is always on building dependable, scalable, and well-structured solutions that perform flawlessly in production. Please do checkout my portfolio and past works on my profile at: https://www.freelancer.com/u/vardanagr67/ Let’s connect in chat to discuss the technical roadmap, production workflow, and project budget in detail. I’m confident I can deliver exactly what you're looking for and ensure this project is completed smoothly, professionally, and on time. Regards, Vardan Agrawal

@swadeshitechno

GOFFY In terms of technology stack, I would lean towards .NET Core and here's why: it not only brings stability and scalability to the project but also provides a solid foundation for a more secure API-driven middleware system, which aligns well with your requirements. Nonetheless, MERN backend (Node.js) is also something we are comfortable and proficient in should you deem it a better fit. Our service doesn't end with delivery; we value knowledge transfer and have an after-launch support system in place to ensure you can confidently manage your platform post-deployment. At Swadeshi, we believe in building long-term partnerships, so my team and I are fully dedicated to making this project a success for you. With a deep understanding and adeptness in handling accounting-related systems of this caliber combined with the value we place on post-deployment support, I believe Swadeshi Technologies will be the ideal partner for your current requirement.

@FaryalFigma

I have hands-on experience building production-grade Tally integrations, not demos or trial syncs. I understand Tally XML, GST voucher structures, and real-world ERP data challenges. I will design and deliver a stable, auditable middleware that cleanly integrates your custom ERP with Tally while meeting GST, audit, and scalability requirements. The solution will be API-driven, configurable, and built specifically to avoid hardcoding, data corruption, and reconciliation issues.

@vaibhavm497

I have hands-on experience in Tally ERP / Tally Prime, GST compliance, and audit-related work for Indian businesses. I have worked on GST voucher structures, ledger reconciliation, and return filing (GSTR-1, GSTR-3B, 2B matching) with accuracy and timely delivery. I am well-versed in Tally XML, GST configuration, voucher creation, tax calculations, and audit support, including data cleanup and finalization of accounts. I understand real-world challenges such as mismatch issues, incorrect GST mapping, and reconciliation errors, and I know how to resolve them efficiently. I focus on error-free accounting, compliance with GST laws, and clear communication throughout the project. I can deliver within the agreed timeline and provide proper reports and documentation. Looking forward to working with you.

@nikunjtechgeek

Hello GOFFY, The middleware would be built as a standalone service using .NET Core Web API, responsible solely for transforming ERP data into valid Tally XML vouchers. All ERP-to-Tally relationships would be stored in a dedicated mapping schema rather than embedded in code. B2B and B2C sales would flow through separate pipelines, producing distinct voucher structures and GST treatments. Each voucher push would be idempotent, keyed by ERP reference, and confirmed via Tally response parsing before being marked complete. You’ll get a stable, auditable integration that behaves like accounting software, not a script. Happy to connect and review details. Best regards, Nikunj

@pawan6589

GOFFY Hello, I have hands-on, production experience integrating ERP systems with Tally using Tally XML / Tally API, including GST-compliant sales voucher sync, master mapping, error handling, and audit trails. I understand this is not a POC and must be stable, auditable, and scalable. Architecture & Approach Standalone middleware (API-driven, configurable) Tech stack: .NET Core (recommended) for better Windows/Tally stability Secure REST APIs between ERP ↔ middleware Tally integration via XML over HTTP No hardcoding; all rules configurable Core Features UI-based master mapping: Customers, Items, Ledgers, GST/Tax Separate B2B & B2C sales datasets GST-correct voucher creation (Party, Item, Tax ledgers) Duplicate prevention using ERP refs + Tally checks Full audit trail (date, user, status, voucher no, XML errors) Screening Answers Tally versions: Tally ERP 9, Tally Prime ERP → Tally sync: Yes, sales vouchers with GST breakup & confirmation handling Master mapping: UI-driven mapping tables stored in middleware DB GST compliance: Correct voucher types, HSN/SAC, tax ledgers, POS logic Tech choice: .NET Core – stable XML handling & Tally compatibility Timeline 8–9 weeks (design, build, testing, finance validation) I can deliver clean code, documentation, deployment guide, and KT, and I’m comfortable working with finance/audit teams. Regards, Pawan