Internal Ledger System – Low-code Automation with CELF Platform

Client Need
The client was managing a large volume of business-critical data through disconnected Excel files. These included contracts, purchase orders (PO), delivery and receipt notes, invoices, and supplier/customer/product information. The fragmentation of data across multiple spreadsheets resulted in manual work, slow data consolidation, frequent errors, and inefficient control over key business operations.
Challenge
The sales support team lacked a centralized system to track and manage the entire business workflow—from contract intake to order fulfillment and invoicing. Manual data entry using Excel was time-consuming, error-prone, and hard to scale. Moreover, important processes such as price adjustment approvals were handled informally via emails or verbal communication, making them difficult to trace or standardize.
Tech Stack
- Platform: CELF (Low-code Development Platform)
- Integration: Connected to the existing sales system
- Automation Tools: Built-in workflow and notification engine
- UX Approach: Excel-like UI for intuitive onboarding
Our Solution
Tinhvan Software developed a low-code internal ledger system using the CELF platform, transforming manual processes into an integrated, automated solution. Key features include:
- Centralized management of contracts, orders, deliveries, and invoices in one platform
- Excel-style interface for ease of use by non-technical staff
- Digitized approval workflows for price changes, with automated email notifications sent to the appropriate approval level
- Full integration with the client's existing sales systems to ensure real-time data synchronization
This approach eliminated spreadsheet silos, automated data handling, and standardized internal workflows with transparency and speed.
Business Impact
- Centralized data improves consistency, accessibility, and control
- Automated approval flows reduce turnaround time and prevent oversight
- Increased operational efficiency across the sales support team
- Improved traceability and governance of pricing decisions
- Ongoing system maintenance and optimization by Tinhvan Software ensures adaptability to evolving business needs
Case studies
System Integration for a Major Food Service Company in Japan
To streamline HR and operations, a major food service company in Japan partnered with Tinhvan Software to integrate siloed systems using Magic XPI. By implementing low-code automation and centralized APIs, they achieved faster data synchronization, reduced accounting delays, and enhanced cross-departmental efficiency across HR, recruitment, attendance, IAM, and shop management systems.
Data Integration Modernization for a Leading Japanese Broadcasting Company
Tinhvan Software helped a major broadcasting company in Japan modernize its legacy systems using the low-code integration platform Magic XPI. The solution unified multiple internal systems, streamlined data formats, automated authentication, and improved operational efficiency across departments through a centralized data exchange bus powered by scalable APIs.
Internal Ledger System – Low-code Automation with CELF Platform
Tinhvan Software developed a low-code internal ledger system using the CELF platform to replace scattered Excel files. The solution centralizes contracts, orders, and invoices, automates approval workflows, and improves efficiency. With an Excel-like interface, it ensures smooth user adoption and supports scalable business process digitization.