TDL Plugin Development for TallyPrime Sync

@Microlent

Hello! I can architect and implement a production-grade TallyPrime sync plugin with robust bi-directional REST integration, resumable migration, and a full in-Tally control dashboard. Proposed Architecture: Core Engine • Modular TDL plugin with optional C# COM DLL for advanced HTTP, batching, and queue control • AlterID-based incremental tracker per company with last-sync checkpoints • Local sync ledger for idempotency, retries, and acknowledgment mapping • REST layer using JSON over HTTPS with API key header authentication Flow • Setup wizard configures API key, company scope via SVCURRENTCOMPANY, interval, document types • Initial migration exports masters and vouchers in controlled batches with progress UI and resume tokens • Real-time push on form accept plus scheduled polling fallback • Pull cycle fetches pending records, applies create/update/cancel, returns Tally-assigned voucher numbers Performance Strategy • Batch processing with chunked payloads for large datasets • Offline detection with queued retries and exponential backoff • Indexed AlterID tracking for efficient delta detection • Error log report with drill-down UI and status dashboard Let’s define your benchmark set and preferred hosting environment so we can move quickly. Best regards, Jasmin

@kamran2012

I can help with this, I will build your TallyPrime sync plugin with TDL and optional COM DLL covering initial bulk migration with progress UI and resume capability, AlterID-based incremental push from Tally to your cloud API, pull and acknowledgment flow from cloud to Tally, and a complete in-Tally configuration and sync status dashboard. For change detection, I will track the LastAlterID per document type per company in a persistent local store, so each sync cycle only processes records modified since the last successful run, keeping the payload size minimal even for companies with thousands of vouchers. 1) I have built TDL plugins that integrate Tally with external cloud systems via HTTP POST, handling both master and voucher sync. 2) For asset history, I use AlterID-based tracking with per-company scoping via SVCURRENTCOMPANY. 3) I have built COM DLLs in C# for TallyPrime to handle complex JSON serialization and HTTP retry logic. Questions: 1) Which TallyPrime version is the primary target (Release 3.0, 4.0+)? 2) Is the cloud API sandbox ready for testing, or will that be set up during development? Ready to start whenever you are. Kamran

@vishal1145

Your TDL plugin will fail if you're relying on HTTP Post actions alone - TallyPrime throttles outbound requests under heavy load, which will cause data loss during bulk migrations. I've built 4 Tally sync systems that process 50K+ vouchers daily, and the solution requires a hybrid TDL + COM DLL architecture with local queue management. Before architecting this, I need clarity on two constraints: 1. What's your expected transaction volume per company per day? If you're syncing 500+ vouchers hourly, pure TDL won't scale - you'll need a Windows service handling the queue with retry logic. 2. Does your REST API support batch endpoints or only single-record operations? If it's single-record, we're looking at 10K+ API calls for initial migration, which will take 6+ hours without parallel processing. Here's the technical approach: - TDL + .NET COM DLL: Build the UI layer in TDL (forms, menus, status indicators) but offload HTTP operations to a C# DLL that handles connection pooling, exponential backoff, and local SQLite queue for offline resilience. - ALTERID TRACKING: Implement a shadow table in SQLite that stores last-synced AlterID per company per object type, enabling sub-second change detection without full table scans. - BATCH MIGRATION ENGINE: Use TallyPrime's Collection framework to stream data in 100-record chunks, writing to local queue first, then processing async to prevent UI freezes during 2-hour migrations. - VOUCHER ACKNOWLEDGMENT: Store cloud-assigned IDs in Tally's Narration field using a hidden prefix (e.g., "##CLOUDID:12345##") to enable bidirectional mapping without schema changes. - ERROR RECOVERY: Build a reconciliation report that compares Tally AlterIDs against cloud sync logs, auto-flagging orphaned records for manual review. I've delivered 3 similar integrations for ERP systems syncing with Salesforce and SAP, including one that handled 200K stock items across 15 companies. The architecture I'm describing prevents the two failure modes I see in your spec: API timeouts during bulk ops and AlterID drift when users work offline for 48+ hours. Let's schedule a 20-minute technical call to walk through your API rate limits and discuss whether your current endpoint design supports idempotent retries - that's the difference between 95% and 99.9% sync reliability.

@jagratip3

Hello, I am an experienced TallyPrime developer with 3+ years of TDL development and expertise in building custom plugins that integrate Tally with external systems via REST APIs. I can develop a production-ready TallyPrime sync plugin (TDL and optional COM DLL) to provide bi-directional synchronization with your cloud system, handling masters, transactions, and incremental updates efficiently. The plugin will include a setup wizard, company selection screen, sync status dashboard, error handling, and on-demand sync functionality. Initial migration will support bulk export with progress UI, batch processing, and resumability. Incremental sync will use AlterID-based change detection for Tally-to-cloud and cloud-to-Tally updates, including acknowledgment of Tally-assigned voucher numbers. Multi-company scoping will be handled via SVCURRENTCOMPANY to ensure data isolation, and offline detection with retry logic will enhance reliability. I have experience in developing COM DLLs for TallyPrime for advanced integrations and have delivered solutions compatible with TallyPrime Release 4.0+ and ERP 9. My approach emphasizes clean, maintainable, and fully documented code, and I will provide installation guides, user manuals, demo videos, and Git-based source code delivery. Best regards, Jagrati P.

@luanlrx

I am a perfect fit for your project as an expert in TDL development with deep knowledge of TallyPrime’s data model, and extensive experience integrating REST APIs for seamless, automated, bi-directional synchronization. I understand the critical need for a clean, professional, and user-friendly plugin featuring progress UIs, real-time push, incremental AlterID-based sync, multi-company support, and offline error handling as outlined. I offer strong skills in TDL, C# COM DLLs, API integration, batch processing, and robust sync mechanisms. While I am new to freelancer, I have tons of experience and have done other projects off site. I would love to chat more about your project! Regards, Luan

@NEHABHAT92

With over nine years of experience in website and mobile app development, my team is well-versed in both Android and iOS platforms, Java, PHP5, MVC and .NET coding. We are also adept with HTML/HTML5/CSS/Responsive design, Wordpress sites and Mobile & Website Design. This wide range of skills makes us perfectly suited for your TDL Plugin Development project. Furthermore, our proficiency spans multiple industries including E-commerce and CMS-based websites thereby ensuring our solid understanding of your needs. We also value effective cost management and offer free 3 months support for existing development. Moreover, we handle hosting and domains cheaply and efficiently. A good software is one that works always without issue. This commitment to quality work is the reason why we have a long lasting relationship with our clients. I am confident that we can apply these strong skills for creating a robust TDL plugin to facilitate seamless data integration between TallyPrime and the cloud-based system.

@crismicheal

We recently helped a client implement a seamless bi-directional sync between TallyPrime and their cloud system using REST APIs, ensuring reliable data migration and real-time updates with clear progress tracking. I can deliver exactly what you’re looking for, clean, reliable, and on time. I focus on clear communication, quality work, and practical solutions that actually meet your goals. I’ve handled similar tasks before and know how to keep things simple, efficient, and stress-free. While I am new to freelancer, I have tons of experience and have done other projects off site. If you want someone dependable who gets it done right the first time, I’m ready to start. I would love to chat more about your project! Regards, Cristiano Ferreira

@Qloron0804

Hello, With over 3+ years of experience in TallyPrime and TDL development, I am confident in my abilities to implement a robust bi-directional synchronization solution for your TallyPrime and cloud-based system. As a developer with comprehensive understanding of Tally's data model, including Vouchers, Ledgers, Groups and Stock, I am well-versed in creating custom plugins that align perfectly with your needs. My proficiency in TDL HTTP Request / HTTP Post actions for REST API has been extensively utilized to ensure seamless API integration as needed for your project. Beyond technical skills, my focus is on building efficient batch processing systems for large data volumes which will be crucial for the initial data migration. Alongside, I propose a well-implemented incremental tracking system using AlterID for optimal change detection. Furthermore, my software engineering background allows me to balance both the product development efforts and project duration according to business requirements. I assure you timely deliverance of all the required TDL files and/or COM DLLs compatible with TallyPrime. Also, a fully commented source code delivered via Git repository will facilitate any future maintenance or enhancements. Let's maximize your business productivity together! Thanks