Why Is Your ERP Interface So Bad? The Real Reasons ERP Software Is Hard to Use

If you have ever wondered why your ERP feels ten years behind the other software you use every day — Slack, Notion, Shopify, even your banking app — you are not alone. It is one of the most common complaints we hear from manufacturers, distributors, and finance teams across the UK.

Your ERP handles your most critical business data: inventory, orders, financials, production schedules. Yet the interface your team interacts with for hours each day feels dated, clunky, and frustrating. And the gap between what your ERP delivers and what modern software has taught you to expect is only widening.

The problem is not that your team is resistant to technology. The problem is structural. There are deep, architectural reasons why ERP interfaces are the way they are — and understanding them is the first step toward fixing them.

Here are the six real reasons your ERP interface is so bad, what the research says, and what you can actually do about it.

Reason 1: ERPs Are Transaction Engines, Not Experience Platforms

Enterprise resource planning systems were designed in an era when “good software” meant accurate data processing. The priority was data integrity: making sure every financial transaction balanced, every purchase order linked to the right supplier, and every inventory adjustment was auditable.

User experience was never the primary design goal. It was an afterthought.

Core ERP architecture was built around the concept of transactions. A sales order is not a task your team wants to complete — it is a data structure that must be recorded with 100% accuracy across multiple tables, with audit trails, approval chains, and financial postings. The interface reflects that backend complexity because it was built by engineers who thought in tables, not by designers who thought in workflows.

Compare that with the tools your team happily uses outside of work. A modern consumer app is designed around a goal — book a flight, order a takeaway, message a colleague — and everything in the interface is optimised to help you complete that goal as efficiently as possible.

An ERP is designed around a record — create a sales order, post a general ledger entry — and the interface is optimised to make sure every field is filled in correctly. The difference in mindset is the root of the frustration.

Reason 2: Architectural Debt — Modern UIs on 20–30 Year Old Data Models

Most ERP systems still running in UK manufacturing and distribution businesses have architectural roots that go back decades. Microsoft Dynamics 365 Business Central traces its lineage to Dynamics NAV, which was first released in 1995. Sage 200 has been through multiple technology stacks since its launch in the 1990s. SAP’s core ECC modules date back to the 1980s.

These systems have been modernised on the surface — web clients, mobile apps, cloud hosting — but the underlying data models and business logic were designed for a different era. The data structures reflect relational database thinking from the 1990s: normalised tables, arcane foreign key relationships, and field-level constraints that make perfect sense to a database administrator but create a terrible experience for a human being.

When an ERP vendor tries to improve its interface, it is constrained by that legacy. It cannot redesign the data model without breaking integrations, reports, and customisations that thousands of customers depend on. So it layers a modern-looking UI on top of the old data structures. The result is a system that looks slightly more modern but still makes you navigate through five screens to create a basic sales order.

This is architectural debt, and every year of patching rather than rebuilding adds to the balance.

Reason 3: One-Size-Fits-All Design

ERP vendors sell to thousands of businesses across dozens of industries. A single system needs to serve a food manufacturer, a construction distributor, a professional services firm, and a retailer. To make that work, the interface is designed generically.

Role centres and personalised dashboards are the vendor’s attempt to solve this problem. The idea is that a warehouse operator sees a different screen than a financial controller. In practice, these role centres are still built from the same generic components: lists, tiles, fact boxes, and charts that the user must configure themselves.

The result is an interface that suits nobody in particular. The warehouse operator gets a screen full of tiles they never use. The sales manager gets a chart that shows the wrong metrics. The financial controller spends their first week in the system rearranging fact boxes to hide the features they do not need.

ERP vendors cannot afford to build bespoke interfaces for every role in every industry. So they build one interface that tries to be everything to everyone — and as a result, it is perfectly optimised for nobody.

Reason 4: Feature Bloat — Your ERP Does 1,000 Things but You Need 20

ERP systems are among the most feature-dense software products in existence. Microsoft Dynamics 365 Business Central ships with thousands of pages, hundreds of reports, and configuration options that span every functional area of a business. SAP S/4HANA has over 100,000 configuration parameters.

This depth is both a strength and a curse. The system can do almost anything, but finding the things you actually need is a daily struggle.

Feature bloat creates a specific kind of UX problem: the signal-to-noise ratio is terrible. Every screen is packed with fields, buttons, and options that are irrelevant to your role. The twenty fields you use every day are surrounded by eighty fields you have never needed and will never need.

Vendors cannot remove those unused fields because another customer in another industry depends on them. So they keep adding, and the interface keeps getting more cluttered, and your team keeps hunting for the one button they actually need among a sea of options they do not.

Reason 5: Vendor Priorities — Compliance and Functionality Come Before UX

ERP vendors operate in a market where the buyer is often not the user. The purchasing decision is made by the CEO, CFO, or IT director, who cares about functionality, compliance, data security, and total cost of ownership. User experience is rarely the deciding factor in a £300,000 ERP purchase.

As a result, UX improvements rarely make it to the top of the product roadmap. Vendor priorities look like this:

1. Compliance — Tax changes, regulatory updates, financial reporting standards. These are non-negotiable.
2. Functionality — New modules, deeper features, more integrations. These drive new sales.
3. Platform — Cloud migration, API improvements, security upgrades. These keep the product competitive.
4. User experience — Interface improvements, workflow redesign, usability testing. These are nice to have.

This is not because ERP vendors do not care about UX. Many of them invest significantly in design teams and usability research. But when a new tax regulation is coming into force in six months, the interface redesign gets pushed back. Every single time.

The cumulative effect is that ERP interfaces improve slowly, incrementally, and unevenly — while the consumer software your team uses every day leapfrogs forward year after year.

Reason 6: No Consumer Software Competition

ERP systems have never had to compete with the likes of Slack, Shopify, or Notion. They operate in a B2B market where the alternatives are other ERP systems. As long as your ERP is no worse than your competitor’s ERP, the vendor does not lose the sale because of a bad interface.

This lack of cross-category competitive pressure means ERP vendors have not felt the urgency to invest in UX the way consumer software companies have. When a consumer app has a bad interface, users abandon it for a better alternative within minutes. When an ERP has a bad interface, your team grumbles and carries on because switching costs are enormous.

The pandemic and the rise of remote work changed the dynamic slightly. Teams that had been using ERP terminals on factory floors were suddenly accessing the same systems from home, on laptops with limited screen space, alongside modern collaboration tools. The contrast became impossible to ignore.

But the fundamental market structure has not changed. ERP vendors still face limited competitive pressure to invest in UX, and that shows in the interfaces your team uses every day.

What the Research Says

The frustration with ERP interfaces is not just anecdotal. A growing body of academic research confirms what your team already knows.

A 2020 study published in MDPI Applied Sciences, titled “Usability Evaluation of ERP Systems,” identified 27 distinct usability problems across the major ERP platforms. The most common issues included interface complexity, excessive navigation steps to complete routine tasks, poor error feedback that left users guessing what went wrong, and inconsistent design patterns that required users to re-learn workflows across different modules.

Industry surveys paint an even starker picture:

• 68% of ERP users report that navigation is their biggest frustration — too many clicks to reach the information they need
• 54% cite clunky dashboards that require too many clicks and present information in confusing, non-intuitive layouts
• 42% report slow performance — systems that take several seconds to load common screens or run reports
• Nearly half of ERP users say they regularly export data to spreadsheet software to complete tasks the ERP should handle natively

That last statistic is the most telling. When your team exports ERP data to Excel to do their actual work, it is not because they prefer spreadsheets. It is because the ERP interface makes the task harder than it needs to be.

What You Can Do About It

Understanding why ERP interfaces are bad is useful, but the real question is: what can you do about it?

You have three options:

Option 1: Do nothing

Live with the interface, absorb the productivity loss, accept that your team will keep exporting data to Excel. This is the default choice, and it is costing your business more than you probably realise — in wasted time, errors from manual data handling, and slow response times to customers.

Option 2: Replace your ERP

A full ERP replacement costs £300,000–£400,000 and takes 9–18 months. Gartner reports that more than 55% of these projects fail to meet their objectives. The interface of the new system might be marginally better, but you will have spent millions and disrupted your entire business to get there.

Option 3: Build an interface layer

This is the approach Sysgraft specialises in. You keep your existing ERP as your system of record. No data migration. No replacement. Instead, we build a modern interface layer that sits on top of your ERP via its REST API — React, Next.js, TypeScript, designed around the way your team actually works.

An interface layer gives you the modern user experience your team deserves without the cost, risk, and disruption of replacing the entire ERP. It connects to your existing system through its API, reads and writes data in real time, and presents it in a purpose-built interface for each role in your business.

If you are using Dynamics 365 Business Central, Sage 200, OrderWise, or another ERP with a respectable API, an interface layer is probably a viable option.

Read our full guide: What Is an ERP Interface Layer?

FAQ

Why is ERP software so difficult to use compared to modern apps?

ERP systems were designed for data integrity and transaction processing, not user experience. They carry decades of architectural debt, and vendor priorities place compliance and functionality ahead of UX. Unlike consumer apps, ERPs have never faced competitive pressure to invest in interface design.

Is it my ERP vendor’s fault that the interface is bad?

Not entirely. ERP vendors operate in a market where the buyer (CEO, CFO) cares more about functionality and compliance than UX. The vendor is responding to market incentives. That said, most major ERP vendors have been slow to invest in UX despite growing evidence that it affects user adoption and productivity.

Will a newer ERP system have a better interface?

Newer cloud-native ERPs generally have better interfaces than legacy on-premise systems, but the gap is narrowing. Even modern cloud ERPs suffer from feature bloat, generic design, and the constraints of supporting a broad customer base. A fresh ERP implementation will cost hundreds of thousands of pounds and carries significant implementation risk for what is often a modest UX improvement.

Can I customise the interface within my current ERP?

To a limited extent. Most ERPs offer some level of customisation — rearranging fields, creating role centres, hiding unused pages. But these are surface-level changes. You are still working within the constraints of the vendor’s design system, navigation paradigm, and interaction model. For a fundamentally better experience, you need to build outside those constraints.

What is an ERP interface layer?

An interface layer is a modern web application that sits on top of your existing ERP and communicates via its API. It replaces the ERP’s built-in interface with purpose-built screens designed for each role in your business. Your data stays in the ERP; only the interface changes. It is typically built with modern front-end frameworks like React and Next.js, and deployed in weeks rather than months.

Time to Do Something About It

Your ERP interface is not bad because of some conspiracy or neglect. It is bad for structural, architectural, and market reasons that have built up over decades. Understanding those reasons is the first step to solving the problem.

The good news is that you do not need to replace your ERP to fix the interface. A modern interface layer can deliver the user experience your team deserves while preserving your existing ERP investment. No data migration. No operational disruption. No six-figure replacement project.

If your team is frustrated with the interface they use every day, let us talk. Start with a discovery sprint — a few days of observation, analysis, and scoping that gives you a clear picture of the problem and a fixed price for solving it.

---