I spent a fair amount of time on SAP implementations, and testing was always one of those areas that people talked about in the project plan but never really thought through until something broke. So here is a review of some testing practices I encountered — what worked, what did not, and what I wish someone had told me earlier.

Methodology Matters (Even If You Think It Does Not)

Every SAP project has a methodology. Sometimes it is a proper one — Deloitte’s Thread Manager, IBM’s Ascendant, SAP’s own Roadmap through Solution Manager. Sometimes it is “we did something similar last time, let’s do that again.” Sometimes it is nothing at all, and the project is winging it.

The methodology you pick shapes how testing happens. Not as an afterthought, but as a first-class activity. If your methodology is built around building software from scratch, it might not fit an SAP implementation very well. SAP is off-the-shelf software that you configure and customise. The testing approach has to reflect that.

The question is not whether you have a methodology. The question is whether your methodology tells you how to test an ERP system.

Manual Testing: Useful Until It Is Not

Manual testing works fine for small projects with stable requirements and a single team in one location. Most SAP projects are none of those things.

The problems show up gradually. Documentation becomes stale because updating it takes effort. Test coverage shrinks because the test suite is too large to execute manually within the timeline. Distributed teams cannot run the same tests the same way. And human error — missed steps, skipped scenarios, incorrect results — accumulates over hundreds of test executions.

This is not an argument against manual testing. It is an argument for knowing when manual testing stops being the right choice.

Record and Playback: A Trap

Automated record and playback tools promise quick wins. You record a user session, play it back, and the tool tells you whether the application behaved correctly. Sounds reasonable.

In practice, these tools are brittle. They are tied to specific screen elements, specific layouts, specific versions of the application. Change the screen, and the script breaks. Change the data, and the script breaks. Change the resolution, and the script breaks. The maintenance cost of keeping these scripts working often exceeds the cost of running the tests manually.

The upfront effort to adapt and annotate the raw recordings is rarely worth it. By the time you have made the scripts useful, you have basically written a manual test procedure — just one that requires a tool to execute.

Before You Automate, Ask Some Questions

Automation is not the answer to every testing problem. Before investing in tools, consider:

  • Are your current manual tests actually cost-effective? If you are running fifty tests and only five catch real defects, the problem is test design, not execution.
  • Could you trim or revise the test suite? Fewer, better tests often beat more, worse ones.
  • Would hiring additional testers solve the problem? Sometimes the bottleneck is people, not process.
  • Are the test procedures clear enough that anyone on the team could execute them? If not, automation will not help. You need clarity first.

Test Result Comparison Tools

You do not need a dedicated test tool to compare results. Most operating systems have diff utilities. File comparison tools, text diff — these can be surprisingly effective for checking whether test outputs match expected results. It is a small step, but it is a real step towards consistency.

Documentation: Do It Properly

Test documentation ranges from high-level test plans (for management) to detailed test scripts (for execution). Both matter. Both are often neglected.

The problem is rarely the tool. It is the process. If you do not have a defined approach to documenting tests — what to document, who documents it, when it gets reviewed — no tool will fix that. Start with the process. Then find a tool that supports it.

When to Automate

Automation makes sense when:

  • There is no organisational crisis demanding immediate attention (if everything is on fire, fix the fire first).
  • Someone is assigned responsibility for tool selection and implementation (not “everyone’s job” — that means nobody’s).
  • The team is genuinely dissatisfied with the current testing approach.
  • Management is willing to invest in tools and process improvement, not just the tool purchase.

If these conditions are not met, automation is not impossible. It just requires more effort to make it work.

The Bottom Line

Automated testing tools are helpful, not magical. They assist with execution and comparison, but they do not replace thinking about what to test, how to test it, and whether the results are correct. The best testing strategy is the one that fits your project’s methodology, your team’s capabilities, and the reality of your SAP implementation. There is no universal answer.