
In Progress
Posted
Paid on delivery
I already have sales invoices sitting in our Sage-native database and need them posted automatically into Sage 50 Accounts (UK). Using the Sage 50 COM/SDK, please create a small Windows service or script that runs once a day, reads the un-posted invoices from the same Sage database, posts them, and then flags them as completed so we never hit duplicates. Everything must first be proven on a full copy of the live company file; I want to see successful test runs and logs before anything touches production. Key points you should know while planning the build: • Source format: invoices are stored directly in the Sage database, not CSV, XML, or any external store. • Schedule: the task must trigger daily without manual intervention—Windows Task Scheduler or a similar reliable mechanism is fine as long as it never misses a day. • API: Sage 50 COM/SDK only; no screen-scraping or manual UI automation. Deliverables I expect: 1. Compiled executable or service plus documented source code. 2. Simple configuration file where I can change company path or schedule. 3. Clear deployment notes and rollback steps. 4. Log output that records each posting attempt, success, or error. 5. Short test report proving the routine works on the copied company file. Acceptance criteria: – All sample invoices in the test copy post with correct totals, VAT codes, and nominal mappings. – Duplicate-prevention logic confirmed. – No orphaned or partially posted entries. – Job finishes within a reasonable window (under five minutes on 5,000 invoices). If you have already worked with the Sage 50 COM/SDK and understand its locking behaviour, I’d love to hear how you would approach error handling and future scaling. The Developer Needs: An active developer subscription to write and test the code
Project ID: 40595920
159 proposals
Remote project
Active 4 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
159 freelancers are bidding on average £1,100 GBP for this job

Hi — Elias here from Miami. I see you're looking to automate the posting of sales invoices from your Sage-native database. This is a vital step to streamline your financial workflow and reduce manual errors. The real challenge here lies in ensuring reliable data transfer between your database and the automation system. A common issue in setups like this is maintaining data integrity while managing the various permissions and access levels. Additionally, considering future expansion, scalability is crucial if your invoicing volume grows. My approach would involve designing a robust integration layer, possibly using a Windows service to handle the automation. This would allow for stable operations and easy updates as your needs evolve. I've worked on similar automation projects where I focused on creating efficient data workflows while ensuring maintainability and performance. A few questions to better understand the scope: Q1 – What specific user roles will need access to this automation? Q2 – Are there any existing integrations with other systems that we should consider? Q3 – What are your expectations for scaling this solution in the future? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
£1,050 GBP in 4 days
8.5
8.5

Hello, With over a decade's worth of experience, my team at Our Software holds a firm grasp on the Sage 50 COM/SDK, making us highly suited to automate your invoicing process. Guaranteed, our solution will abide by your specifications allowing for smooth running and accurate posting of invoices without any instances of duplication or partial entries. Our stringent method entails first testing the entirety of the task on a live company file, enabling you to scrutinize efficacy while enjoying complete control over your main system's data. Rest assured, this application dedicated to eliminating manual intervention and promoting a hands-free deployment, we'll integrate a reliable mechanism like the Windows Task Scheduler that guarantees daily triggers without exception. Moreover, with us, you'll receive comprehensible documentation like clear deployment notes to tool usage and rollback steps affording you full control of the service we've built for you. Finally, our log output system will diligently record all activities associated with invoicing from posting attempts to successes and errors ensuring absolute transparency regarding what's occurring behind the scenes. Yours is an important project and we would be honored to exceed your expectations in all capacities. Thanks!
£1,165 GBP in 8 days
8.6
8.6

Hello I am Windows Desktop application developer and I have 25 years of experience I have extensive experience with COM and creating Windows services, therefore I am able to figure our with Sage 50 COM/SDK and complete your project. Also, I am familiar with Windows Task Scheduler and I can create scheduled task automatically.
£1,000 GBP in 7 days
8.4
8.4

Interesting project, I will build a Windows service that reads unposted invoices directly from your Sage 50 database via the COM/SDK, posts them with correct totals, VAT codes, and nominal mappings, then flags each as completed to prevent duplicates. A simple config file will control the company path and schedule. On a similar Sage 50 COM integration, wrapping each invoice post in a transaction with retry logic handled the locking issues cleanly: partial posts rolled back automatically, and the log captured every attempt with a clear pass or fail status. Questions: 1) Are all invoices single currency (GBP), or do some carry foreign currency lines? 2) Do you already have a staging copy of the company file ready, or should I factor in time to set that up? Looking forward to discussing further. Best regards, Kamran
£1,125 GBP in 13 days
8.5
8.5

I AM AVAILABLE —---------------------------- I have experience with Sage 50 SDK/COM integrations and Windows automation. I can build a reliable posting service with logging, duplicate prevention, and scheduled execution. Have you got an active Sage Developer subscription?
£1,050 GBP in 7 days
8.2
8.2

With my extensive experience in automation and proficiency in the Sage 50 COM/SDK, I am confident in my ability to develop a robust solution to automate your daily invoice posting. This includes creating a Windows service or script that effortlessly extracts un-posted invoices from your native Sage database, posts them accurately into Sage 50 Accounts (UK), and efficiently handles duplicate prevention. My services do not involve screen-scraping or manual UI automation; instead, I utilize the precise APIs that the project explicitly necessitates. My track record speaks for itself: with a completion rate of 99% and a position in the top 3% of Freelancer.com directory, my clients trust me to deliver on time and at competitive rates. Moreover, I offer a lifetime free bug fixing guarantee, ensuring that any unforeseen issues will be resolved promptly. At the core of my approach is thorough testing and documentation. Before anything is implemented on production, I demonstrate success on a fullcopy of your live company file, with clear logs showing each posting attempt and its result. To enhance your user experience, I also provide the flexibility to change company path or schedules through a simple configuration file along with detailed deployment notes and rollback steps. Scaling is an important aspect of any project; therefore, I take error handling and future scaling seriously.
£5,000 GBP in 7 days
8.0
8.0

⭐⭐⭐⭐⭐ Automate Invoice Posting to Sage 50 Accounts with Ease ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see that you're looking for an automated solution for posting invoices to Sage 50 Accounts. You need not look any further; Zohaib is here to help you! My team has already completed 50+ similar projects for Sage integration. I will create a reliable Windows service that runs daily, ensuring all invoices are posted accurately and duplicates are avoided. ➡️ Why Me? I can easily handle your project as I have 5 years of experience in Sage 50 integration and automation. My expertise includes working with COM/SDK, Windows services, and task scheduling. Additionally, I have a strong grip on error handling and logging mechanisms, ensuring a smooth process throughout. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ Sage 50 COM/SDK ✅ Windows Service Creation ✅ Task Scheduling ✅ Automation Scripting ✅ Error Handling ✅ Logging Mechanisms ✅ Database Management ✅ Configuration File Setup ✅ Deployment Notes ✅ Testing and Validation ✅ Invoice Processing ✅ Duplicate Prevention Waiting for your response! Best Regards, Zohaib
£1,100 GBP in 2 days
8.0
8.0

As an experienced digital solutions specialist, I may not have direct experience with the Sage 50 COM/SDK, but my proficiency in working with diverse programming languages like PHP and my problem-solving mindset make me a perfect fit for your project. For a successful job like this, adaptability and the ability to learn on-the-go is crucial, which are traits that define my professional journey. I'm confident in my abilities to understand the intricacies of the Sage 50 COM/SDK framework to develop a reliable solution that addresses your exact needs. My strengths lie in creating scalable and high-performance systems, much like what you need for your invoice posting automation project. I perfectly understand the importance of accuracy as well as security when working with financial data. Rest assured that I will handle your sensitive company records with utmost attention and strict adherence to your requested process. Moreover, consistency and efficiency are qualities that define my work ethics. Building a daily automated schedule that never misses a day is not only critical for your business's smooth operation but also speaks to my proficiency as a developer. Lastly, it's worth noting that I am familiar with creating comprehensive logging systems to troubleshoot and track operations. Let's leverage my skills, dedication, and passion for impactful digital solutions to transform this aspect of your business management!
£1,050 GBP in 7 days
7.7
7.7

The biggest risk here isn’t the daily trigger; it’s preventing a Sage posting from succeeding while the completion flag fails, causing the same invoice to be submitted again the next day. I’d build the C#/.NET routine around an explicit invoice status workflow, with a unique source-invoice reference checked before every COM/SDK posting attempt. Each invoice would be validated for totals, VAT codes, and nominal mappings, posted individually, and marked complete only after Sage confirms success. Failures would remain retryable and be logged without blocking the rest of the batch. I’d test exclusively against the full copied company file first, including duplicate runs, interrupted runs, invalid mappings, and Sage locking scenarios. The logs and test report would show exactly what was attempted and Sage’s returned result. Configuration would keep the company path and scheduling settings outside the executable, with deployment and rollback documented before production use.
£1,000 GBP in 7 days
7.2
7.2

I have 10 Years of experience. If you give me a chance, I can do it in less than 24 hours. I am working as an integrator for different systems, so it is a perfect job for me
£1,000 GBP in 2 days
7.3
7.3

Hi there, I am excited about the opportunity to work on automating your daily Sage 50 invoice posting. With extensive experience in PHP, .NET, C# programming, and automation, I have a strong understanding of the Sage 50 COM/SDK, which aligns perfectly with your project needs. I propose developing a robust Windows service that autonomously posts un-posted invoices from your Sage database to Sage 50 Accounts. Utilizing the Sage 50 COM/SDK, I will ensure seamless integration without any manual UI interference. The service will be scheduled to run daily, leveraging Windows Task Scheduler to guarantee consistent execution. To prevent duplicates, I will implement a reliable flagging mechanism, confirming that posted invoices are never retried. My approach will include comprehensive error handling and logging, offering transparency and easy troubleshooting. The solution will be thoroughly tested on a full copy of your live company file, ensuring all invoices post with correct totals, VAT codes, and nominal mappings. Having previously worked on similar projects, I am well-versed in handling potential challenges, such as Sage’s locking behavior. My goal is to deliver a solution that not only meets your current needs but also scales efficiently for future growth. Looking forward to the opportunity to contribute to your project. Best Regards,
£1,125 GBP in 14 days
6.9
6.9

With a decade of experience under my belt, I confidently offer my expertise in API development, C# programming, PHP, and software architecture to fulfil your needs involving Sage 50 COM/SDK. I have extensive experience with Windows service and script development which will enable me to create a reliable solution for automatically posting invoices into Sage 50 Accounts. Cognizant of the central role of the Sage database in your project, I assure you that I will adhere strictly to the stipulated requirement of not relying on external files such as CSV or XML to ensure maximum accuracy and efficiency for invoice posting.
£1,050 GBP in 7 days
6.7
6.7

Sure, This is easy. I would create node.js or python script that can run on your pc and automate daily invoice posting. Let's discuss over chat. Kind Regards Stefan
£1,100 GBP in 7 days
6.6
6.6

With my hands-on experience in Sage 50 COM/SDK, I'm uniquely positioned to provide the automated posting solution you're seeking. As a seasoned developer with Web Crest, my expertise includes precisely your requirements: API Development, Automation, C# Programming, and Software Architecture. I understand the intricacies of Sage 50’s unique approach and can ensure the smooth transfer of your invoices daily without any duplications or partial postings. At Web Crest, we're no strangers to high-performance applications with time-critical schedules like yours. I’ve already delivered Windows services and applications that run seamlessly using similar tools like Windows Task Scheduler. On top of that, we always perform vigorous testing on separate systems to guarantee flawless sudden deployments. As for scalability and error handling, I will implement robust logic checks at each step to deal with potential failures proactively. My methods are designed to dramatically reduce risks such as orphaned entries or duplicates. Additionally, I will maintain a clear log output that will be detailed enough for troubleshooting while also being easy-to-understand for non-technical stakeholders. Finally, you can trust that I will not only meet but exceed your expectations as you progress toward a fully automated invoice system within just five minutes for up to 5,000 invoices. Let's get started!
£1,000 GBP in 5 days
6.6
6.6

Greetings, I can help build a reliable Sage 50 Accounts UK integration using the official Sage 50 COM/SDK approach, with a focus on automation, accuracy, and safe deployment. I understand that this is a production accounting workflow where duplicate prevention, logging, and rollback capability are critical. I’ll create a Windows service or scheduled application that connects directly to your Sage database, identifies un-posted invoices, validates the required fields, posts them through the Sage COM/SDK, and updates the source records only after successful completion. The process will include detailed logging, error handling for Sage locking issues, failed transactions, and recovery scenarios. I’ll first deploy and test everything against a full copy of your live company file, providing test results and logs before any production rollout. The final solution will include compiled binaries, documented source code, configuration settings, deployment instructions, and rollback procedures. I have experience building business automation tools and database integrations, and I understand the importance of transactional processing in accounting systems.
£1,050 GBP in 7 days
6.6
6.6

Greetings, I'm a full stack developer with 10+ years of experience, I have experience developing Windows automation and integrating accounting systems using SDKs and APIs. I can build a reliable service that posts invoices to Sage 50 Accounts (UK) via the COM/SDK, includes duplicate prevention, detailed logging, configurable settings, and automated scheduling, with thorough testing on your copied company file before production deployment. Why work with me? ★ Proven track record: 75 successful projects with 5-star reviews ★ Responsive, deadline-focused, and committed to results ★ 3 months of free post-launch support Let’s schedule a quick chat to discuss your preferred tech stack, timelines, and launch goals. I’m confident I can bring your vision to life. Best regards, Samar H.
£1,000 GBP in 15 days
6.1
6.1

I'm excited about the opportunity to automate the daily posting of sales invoices into Sage 50 Accounts. Using the Sage 50 COM/SDK, I propose developing a reliable Windows service that efficiently retrieves un-posted invoices from your Sage-native database, processes them, and updates their status to prevent duplicates. The entire build will be rigorously tested against a full copy of your live company file to ensure accuracy and reliability before implementation. You'll receive a compiled executable with well-documented source code, enabling easy customizations such as changing the company path or schedule via a simple configuration file. Additionally, I'll provide detailed deployment notes, rollback steps, and logging output for each posting attempt. Understanding your needs for error handling and future scalability, I will ensure the implementation includes robust logging mechanisms to capture all attempts, successes, and errors during the posting process. This will help us refine the system for optimal performance. I'd love to discuss further: What specific error handling measures are you envisioning for this project? Looking forward to collaborating on this project! Best, Talha
£1,000 GBP in 13 days
5.8
5.8

As an experienced AI software developer with over 12 years in automation, I have a deep understanding of software systems and how to create efficient automations. I have successfully delivered over 600 projects and hold expertise in Sage 50 COM/SDK among other programming languages. I'm more than qualified to create a tailored Windows service or script that can automate the daily posting of your invoices from your Sage-native database into Sage 50 Accounts using the exclusive API you've specified. My AI skills give me an edge when it comes to error handling and future scaling. In my previous projects, I have always accounted for various edge cases and ensured smooth scaling for businesses. My approach includes detailed logging and sophisticated data-processing frameworks that guarantee invoices are posted accurately without duplicates or orphaned entries. I will provide clear deployment notes, rollback steps, and documentation on how you can change the company path or schedule - ensuring easy maintenance and customization for you. Lastly, your project demands a professional that reliably delivers error-free output within project deadlines - which aligns perfectly with what I offer. Efficiency is a core pillar of my work ethos; therefore, I guarantee that this automaton task will take under five minutes on even up to 5,000 invoices.
£1,100 GBP in 14 days
6.1
6.1

Hi, I’ve worked on database integrations and automated business workflows where accuracy, duplicate prevention, and reliable scheduled processing are critical. Your Sage 50 automation project requires careful handling because financial data cannot tolerate partial postings or inconsistent states. The main challenge will be working safely with the Sage database, COM/SDK limitations, and company-file locking behaviour. I would approach this by building a controlled Windows service/script with transaction-safe posting logic, invoice status tracking, detailed logging, and full testing against a cloned company file before any production deployment. I’ll deliver the compiled solution, documented source code, configuration options, deployment guide, rollback steps, and test report. The system will include error handling, duplicate checks, and monitoring logs to ensure dependable daily operation. Best Regards, Fizza Nadeem k
£1,000 GBP in 11 days
5.9
5.9

Your requirement to post Sage-native invoices through the Sage 50 COM/SDK, prove everything against a full company-file copy, and prevent duplicates is exactly the right way to structure this integration. I would build a small C# Windows service or scheduled executable with configurable company path, credentials, schedule, batch size, and logging. The two main priorities would be reliable Sage integration and maintainable operations: each invoice would be validated before posting, processed within a controlled transaction flow, and marked complete only after Sage confirms success. This prevents partially posted records and makes reruns safe. For locking and error handling, I would use a single-instance job, detect company-file and record locks, apply limited retries for transient COM errors, and isolate failed invoices so one bad record does not stop the full batch. Logs would include source invoice ID, Sage reference, VAT and nominal validation, posting result, duration, and full error details. For 5,000 invoices, I would use controlled batching and avoid repeatedly reopening the Sage connection. I have delivered database-driven automation and legacy business-system integrations where transactional safety, repeatable jobs, audit logs, and rollback planning were essential. A relevant example is Restaurant POS Rescue, involving legacy database handling, payment workflows, and background Windows-service processing.
£1,050 GBP in 7 days
5.8
5.8

Leeds, United Kingdom
Payment method verified
Member since Mar 30, 2026
£250-750 GBP
₹600-1500 INR
$1500-3000 USD
$500-1500 USD
$10-35 USD / hour
₹1500-12500 INR
$250-750 CAD
$3000-5000 USD
$250-750 USD
₹100-400 INR / hour
₹600-1500 INR
₹600-1500 INR
₹12500-37500 INR
₹400-750 INR / hour
₹600-1500 INR
₹37500-75000 INR
₹1500-12500 INR
₹12500-37500 INR
₹1500-12500 INR
₹37500-75000 INR
₹400-750 INR / hour