When evaluating AP automation for Business Central, the integration question matters as much as the software itself. This post covers how native BC extensions differ from middleware-based connections, what data syncs automatically, and what IT involvement actually looks like depending on the approach.
From Marketplace to Automated
Why Integration Method Matters
When an AP tool is built natively inside Business Central, the implementation process looks very different than a traditional software project. There is no middleware to configure, no data mapping to define, and no IT project plan required to get started.
AP teams can find and evaluate solutions directly on Microsoft Marketplace, see what is available, and move toward deployment without waiting on an extended technical engagement.
That accessibility matters because the people closest to the AP process, the accountants managing invoices, vendors, and approvals, are often better positioned than IT to evaluate whether a tool actually fits how they work. This removes headaches for the IT and accounting departments alike.
Understanding the difference between a native extension and a middleware-connected solution means AP teams can ask better questions during vendor evaluation, recognize when an integration claim is overstated, and avoid committing to a tool that will require more infrastructure and IT dependency than expected.
Native BC Extensions vs. Middleware Platforms
Microsoft Marketplace is where businesses discover and deploy solutions for Business Central, but the apps listed there are not all built the same way. Some are native BC extensions, written in AL within the BC extension framework. AL is the native programming language that Business Central is written in, which means the extension works the way BC works.
Others use middleware platforms that connect Business Central to external systems through a third-party integration layer.
Apps written in AL within the BC extension framework run inside the BC environment, not alongside it. There is no bridge, no translation layer, and no third-party data processor sitting between your ERP and your AP tool.
Middleware platforms work differently. Data flows bidirectionally between Business Central and the AP system, with the middleware sitting in between. Depending on the platform, that layer may actively remap and transform data, or it may act primarily as a conduit passing data through with minimal modification. Either way, each handoff in that chain is an additional point where failures can occur and where ongoing maintenance responsibility accrues.
What Syncs Automatically
Vendors. Payment terms, currency, tax info, and banking details flow between systems. Vendors created or updated within BC automatically update in your AP system.
Chart of accounts. Your GL structure syncs automatically. Additions, renames, and deactivations carry over without manual intervention.
Dimensions. This is where many integrations fall short. BC's dimension framework needs to be fully visible in the AP interface for invoice coding to be meaningful. Native extensions surface dimension values directly. Middleware solutions typically require custom field mapping that must be reconfigured whenever dimension structures change.
Posted documents and payment status. When invoices are approved and posted in BC, or payments are run, that status updates in the AP platform automatically rather than on a scheduled delay.
Integration Methods Compared
Native BC extensions. Discovered and deployed through Microsoft Marketplace, no middleware layer. Your dimensions, chart of accounts, vendor records and so forth are available in the AP tool exactly as they exist in BC.
Flat file transfers. CSV or spreadsheet exports on a schedule. No real-time sync. Errors accumulate silently. Any structural change in either system requires reconfiguration. This approach exists in older implementations where better options weren't available.
Middleware connections. More capable than flat files, but introduces dependency on a third-party layer, ongoing compatibility maintenance, and additional cost.
6 Questions to Ask Providers About their Integration
- Is your solution built natively inside Business Central, or does it connect through a separate integration layer?
- If there is a middleware layer, who owns it and who is responsible when it breaks?
- How do dimensions sync, and what happens when we change our dimension structure?
- What happens to our AP workflow when Business Central releases an update?
- How long does implementation typically take, and what IT resources are required on our end?
- Is there a separate portal or interface outside of Business Central, and if so, how is that data kept in sync?
Conclusion
The way an AP tool connects to Business Central shapes how much your team can rely on it. Whether the deciding factor is data accuracy, IT overhead, or long-term maintenance, the integration architecture is where those outcomes are determined.
