ERP customisation has been a recurring source of trouble in implementations for as long as ERP systems have existed. The systems that get heavily customised tend to become maintenance burdens that consume the value the customisation was supposed to add. The systems that get insufficiently customised often fail to fit the business well enough to deliver what they should. Finding the right balance is harder than the surface conversation suggests, and the right approach in 2026 looks different from what the right approach looked like a decade ago.
This piece walks through what ERP customisation should actually look like in 2026, given the maturity of modern platforms and the integration patterns that have become standard. It covers what to customise, what to leave alone, and how to think about extension versus customisation as separate categories of work. It is written for technical leaders and business leaders involved in ERP decisions.
Customisation Has Become Less Necessary
Modern ERP platforms have become more capable out of the box, which has reduced the share of customer needs that genuinely require customisation. Industry-specific configurations exist for most major sectors. Standard workflows handle a wider range of operational patterns than they used to. Reporting capabilities have improved substantially. The threshold at which a business need justifies customisation has shifted upward, and projects that approach customisation with the assumptions of a decade ago tend to over-customise.
The work of Sprinterra reflects this evolution, with explicit conversation about which customer needs are genuinely outside what the platform handles and which can be addressed through configuration of standard capabilities. The shift toward configuration-first thinking has been one of the more meaningful changes in implementation practice over the past several years.
The Customisation Decision Framework
A useful framework for customisation decisions starts with categorising the customer need. Is it a process that genuinely differs from how the rest of the industry operates, where matching the difference is operationally important? Is it a preference for a familiar way of doing things that the platform’s standard approach would replace with something better? Is it a workflow detail that the team has gotten used to but that has no real operational significance?
Each category warrants different treatment. Genuinely differentiated processes may justify customisation. Familiar preferences usually do not. Workflow details almost never do. Distinguishing among these categories takes time during requirements gathering, and the discipline of doing it explicitly produces better customisation decisions than approaches where every requested deviation gets implemented.
Extension Versus Customisation
Modern platforms increasingly distinguish between extension and customisation. Extension means adding capability that the platform does not have, typically using extension frameworks that the platform supports and that get maintained alongside platform updates. Customisation means modifying the platform’s behaviour in ways that may not survive future updates cleanly.
Extension is generally preferable to customisation when the choice exists. Extensions live in the supported envelope of the platform. They get tested against new versions. They benefit from the same patch and update cycle as the platform itself. Customisations live outside this envelope and require explicit maintenance work that extensions do not.
Per Forrester – AI Services, the broader trend toward platform-supported extension patterns has reshaped how modern systems handle the build-versus-buy question, with extension frameworks supporting more capability than custom development would have produced a decade ago.
Integration as a Substitute for Customisation
In many cases, what looks like a customisation requirement turns out to be better solved through integration with another system. Specialised functionality that does not fit the ERP’s natural scope is often available as a separate product that can integrate with the ERP. Industry-specific tools, advanced analytics, customer-facing applications, and many other categories of capability often exist as separate products that integrate cleanly.
This kind of best-of-breed approach has become more viable as integration patterns have matured. The patterns for connecting ERPs to other systems are more developed than they used to be. The vendors that provide specialised products generally support standard integration approaches. The combined system, with the ERP handling its core role and other systems handling adjacent capabilities, often produces better operational outcomes than trying to make the ERP do everything through customisation.
AI Integration as the New Frontier
One of the newer customisation considerations involves AI integration. Modern ERP platforms increasingly support AI capabilities natively, but the depth of these capabilities varies. Customers with specific AI needs that go beyond what the platform provides natively often face a choice between custom AI development and integration with specialised AI services.
The work of Sprinterra, on artificial intelligence development,addresses this kind of need, with AI capability that complements the ERP rather than being built directly into it. The architecture matters because AI development moves at a different pace than ERP development, and keeping the two as separate components allows each to evolve at its appropriate pace without one constraining the other.
Practical Recommendations
For organisations approaching ERP customisation in 2026, a few practical recommendations apply. Start with configuration before considering customisation. Look at extension frameworks before custom development. Consider integration with specialised products before building specialised functionality into the ERP. Treat customisation as a deliberate exception rather than a default response to perceived gaps.
The systems that come out of this kind of disciplined approach tend to age well. They benefit from platform updates without requiring extensive rework. They evolve as the business evolves rather than constraining the business to what was customised at implementation time. The discipline pays off across the working life of the system, which is usually measured in years rather than months. Customers who internalise this approach end up with ERP investments that deliver lasting value rather than systems that look impressive at go-live and become progressively harder to live with.
Documenting Customisation Decisions
One practical aspect of disciplined customisation that often gets overlooked is documentation. Every customisation should be documented with the reasoning behind it: what business need it addresses, what alternatives were considered, why the alternatives were rejected. This documentation matters when the system is being maintained years later, often by people who were not involved in the original implementation.
Without this documentation, customisations accumulate as opaque code that nobody fully understands. Future teams hesitate to remove or modify them because they cannot tell whether the customisation is still serving its original purpose. The result is technical debt that grows over time and that becomes increasingly expensive to address. Better practice treats customisation documentation as part of the customisation work, completed alongside the technical implementation rather than deferred. The discipline costs little in the moment and saves substantial effort years later when maintenance teams need to understand what the original implementers were thinking.