ERP deployment: Why a test plan is essential for a risk-free Go-Live

The importance of a test plan in a successful ERP deployment

You are just a few weeks away from the deployment of your ERP, and the pressure is mounting. After months of collaboration with the integrator, constant adjustments, and meetings to ensure the system meets your needs, one question keeps resurfacing: Is your ERP truly ready for launch? 

As a decision-maker or operational specialist, you understand that even a minor malfunction can have significant consequences: incorrect reports, payroll errors, outdated inventory, pending invoices, and more. 

These discrepancies can disrupt your operations, decrease productivity, and undermine your team's trust. This is where the ERP test plan becomes crucial. 

Often mistakenly seen as just a final check, it is, in fact, your quality assurance guarantee.

It allows you to evaluate all essential functionalities, verify their compliance with requirements, and most importantly, prevent unpleasant surprises before the launch

I. The Risks of an ERP deployment without a test plan

Deploying an ERP without a solid test plan exposes the company to significant risks that can have long-term impacts.

It's not just a matter of immediate efficiency, but also of operational security, reputation, and the sustainability of the project. Skipping this step can lead to critical malfunctions.

Here are the main risks to which a company is exposed without a rigorous testing plan:

  1. Risks of omissions and errors

    Without a clear and detailed testing plan, business specialists find themselves figuring out how to test the system. This lack of structure can lead to omissions in testing and even errors in the validation process.

    In the absence of precise guidelines, it becomes easy to overlook potential malfunctions or perform partial validations.

    In other words, this increases the risk of having an imperfect system in production after the deployment of your ERP.

  2. Late discovery of critical errors

    When a company does not use a test plan, it risks discovering errors only after the ERP has been deployed. These errors, when not detected early on, can cause significant delays in operations or even production stoppages.

    Thus, urgent corrections must be made.

    However, a well-drafted test plan allows for the detection of errors before they impact operations.

  3. Loss of user trust

    The deployment of an ERP must be carried out smoothly to encourage adoption by operational teams.

    If significant malfunctions occur after deployment, it leads to a loss of user confidence in the system. They perceive the ERP as an ineffective or complicated tool, which may cause them to resist its adoption. 

  4. Financial and legal risks

    In certain sectors, errors made due to technical issues can result in financial penalties or legal action.

    For example, an ERP that manages financial flows, sensitive data, or regulated processes must function flawlessly. Lacking a testing plan can lead to non-compliance with existing regulations, jeopardizing the company after the deployment of your ERP.

  5. Negative impact on productivity

    The time spent fixing errors or correcting anomalies after deployment can severely impact the company's productivity.

    Indeed, without rigorous testing, temporary solutions or manual workarounds will need to be implemented. These emergency measures will slow down the transition to automation and complicate processes, thereby diminishing the expected efficiency gains.

  6. Inability to respond effectively to anomalies

    The test plan provides a framework for identifying, documenting, and resolving anomalies before they disrupt operations. Without it, it becomes challenging for both the integrator and internal teams to pinpoint the causes of malfunctions.

    Consequently, managing the necessary corrections after your ERP deployment will result in additional delays in problem resolution.

II. Key Components of an Effective ERP test plan

The test plan is an essential tool for business specialists to verify that the ERP system meets their operational needs. The integrator drafts the document, and the test plan assists business users in validating the ERP's functionalities, even without technical knowledge.

This guide enables non-technical teams to verify these functionalities independently, without the need for in-depth expertise in the software.

The integrator is best suited to draft this document because they have in-depth knowledge of the system. They fully understand how each process works.

Moreover, they can explain how to test the various scenarios, which includes both data migration and the verification of digitized processes.

The ERP testing document customizes the validation of business processes by defining precise acceptance criteria, tailored technical requirements, and a thorough tracking of discrepancies to ensure the proper functioning of each module (such as payroll management, order management, business analytics, etc.).

  1. Processes to validate

    Here are some examples of processes that can be included based on the defined scope:

    • Payroll processing in the case of implementing the HR module.
    • Order and purchase tracking in an inventory management module.
    • Sales analysis and commercial forecasting for the sales department.
    • Monitoring the quality of finished products as part of a quality management module.
    • Cost accounting to track expenses by project or department

    These examples vary depending on the scope defined during the project design. Therefore, the test plan must be customized according to the processes that will actually be managed by the ERP.

  2. Acceptance criteria

    For each tested process, acceptance criteria are defined and validated by the client. These criteria ensure that the business process operates as intended.

    As an example, they may relate to:

    • La migration des données For example, ensuring that all financial data is accurately transferred.
    • The compliance of processes : For example, ensuring that the system automatically generates purchase orders after approval.

    Consequently, acceptance criteria provide an objective basis to determine whether a test is successful or not.

  3. Technical requirements

    The test plan must also specify the technical requirements needed to carry out the tests. This ensures that business specialists have the right tools to test the processes effectively.

    For example :

    • User access: Only the human resources manager will have access to the payroll modules.
    • Requirement: A stable internet connection may be necessary to ensure real-time synchronization of inventory.
  4. Monitoring of discrepancies

    Each executed test must document precisely:

    • Expected result: what should happen if the test is successful.
    • Actual result: what actually occurred during the test.
    • Observed deviation: if any anomalies or deviations from the expected result are detected, they must be recorded and reported to the integrator.

    In summary, this tracking allows for correcting errors before deployment, ensuring that your ERP deployment is fully functional for the defined scope


Example of a test matrix:

Processes to validateAcceptance criteriaRequirementExpected ResultActual ResultStatus
Traitement des SalairesPay slips must be generated without errors for allAccess to payroll databasesPay slips generated correctlyPay slips generated with errorsFailed
Order CreationThe order must be validated and recorded automaticallyAccess to the purchasing moduleOrder validated and recordedOrder validated but not recordedFailed
Stock updateStocks must be automatically adjusted upon receiptConnection to the serverAutomatic stock updateCorrect updatePassed
Invoice validationThe invoice must be generated after order validationAccess to the billing moduleInvoice generated with correct informationInvoice generated with an incorrect amountFailed

III. The Strategic impact of an ERP test plan

A well-designed test plan is not just about validating the functionalities of an ERP. In fact, it directly influences how the project is managed and affects its ability to transform the business. Therefore, it is not merely a technical step; it is a key element of the overall ERP project strategy.

  1. User buy-in:

First of all, business specialists, often non-technical, can test the ERP effectively and independently thanks to the test plan. This document serves as a detailed guide for each process to be validated.

Additionally, the integrator, who is thoroughly familiar with the system, writes this document by precisely outlining the steps to follow for each test. This way, even users without experience in software usage can test complex processes effectively. 

Without such a guide, business specialists must figure out how to proceed on their own, which could lead to errors or omissions.

  1. Continuity of operations:

Moreover, the deployment of the ERP affects nearly all departments, from human resources to production. If the team does not detect errors in a timely manner, they can lead to significant disruptions.

Therefore, a well-structured test plan helps the company anticipate and correct malfunctions before they impact operations. By testing each essential process, the company ensures a smooth transition to the ERP.

  1. Better return on investment (ROI):

Implementing an ERP often represents a significant financial and human investment. For this investment to yield benefits, it is crucial that the ERP operates optimally from the start. By using a test plan, the company can ensure that every euro invested translates into concrete operational gains: improved efficiency, cost reduction, and automation of critical tasks. This helps ensure that the project is a long-term financial success, not just a technical achievement.

  1. Ensuring buy-in from business users:

Moreover, one of the significant advantages of the test plan lies in the direct involvement of business users in the validation phase. This allows them to test the ERP before it goes live, ensuring that the tool meets their specific needs. By testing business scenarios themselves, they can verify that critical processes are properly managed by the system. Thus, this active participation of users fosters a better ownership of the ERP.

As a result, teams feel more confident and better prepared to use the tool daily, which reduces resistance to change and ensures a smooth transition.

  1. Minimizing deployment-related risks:

Without a test plan, deploying an ERP can be a leap into the unknown. The risks of errors, incompatibilities, or malfunctions are significantly higher. Teams must also respond effectively to issues once the system is live. However, a well-structured test plan allows for the identification of weak points before they become problematic.

  1. Strengthening trust between the integrator and the company:

Furthermore, the test plan serves as an essential communication tool between the integrator and the company. By providing a transparent and detailed framework to validate every aspect of the project, it allows the integrator to demonstrate the quality of their work. Meanwhile, the company can objectively track the project's progress.

This, in turn, strengthens mutual trust and creates a more serene collaborative environment, where expectations are clear and potential issues can be resolved constructively.

  1. Ensuring compliance and minimizing regulatory risks:

Finally, in certain sectors, compliance with standards and regulations is crucial (finance, healthcare, industry, etc.). The test plan ensures that the ERP adheres to all regulatory and legal requirements by validating critical processes that must meet these standards.

This helps minimize the risks associated with non-compliance while ensuring that the company is prepared to face audits or post-deployment reviews.

IV. Practical Tips for successful ERP testing:

The success of testing in an ERP project depends on several factors. Indeed, preparing business teams and organizing the tests effectively play a crucial role. While the test plan serves as an excellent foundation, the execution must be smooth and efficient.

Here are some practical tips to follow: 

  1. Involve business users from the start:

    First and foremost, business users who will work daily with the ERP must be involved from the early stages of the testing process. They are the ones most familiar with the specifics of business processes and can confirm whether the ERP meets their needs.

    • Advice: Plan workshops with business specialists to define test scenarios specific to their activities. Ensure that each user is well aware of the acceptance criteria for each process.

    Tip: Prepare demonstrations of the ERP before testing to familiarize users with the tool.

  2. Plan incremental testing:

    Next, it is crucial to proceed in stages, testing critical functionalities first before expanding to the entire scope. A gradual approach allows for the quick identification of major anomalies without being overwhelmed by a multitude of simultaneous tests.

    • Advice: Divide testing into phases (e.g., unit testing, business process testing, end-to-end testing). Start with critical functionalities such as accounting, inventory management, or production processes, and then move on to secondary features.

    Tip: Make sure to thoroughly test inter-departmental flows where multiple ERP modules interact, such as order management, purchasing, and inventory management.

  3. Use test management tools:

    Moreover, to keep track of tests conducted, anomalies discovered, and corrections made, it is helpful to use a test management tool. This not only facilitates the integrator's tracking of corrections but also documents the progress of testing transparently.

    • Advice: Use tools like Jira, TestRail, or even a spreadsheet to track each test, its status (passed/failed), and the status of anomaly corrections.

    Tip: Designate a point of contact for each team or department to centralize test results and report anomalies.

  4. Plan for iterations:

    It is also important to plan for iterations, as testing does not occur all at once. Some anomalies are likely to require adjustments. Therefore, it is essential to allocate enough time for iterations to allow the integrator to correct errors and validate new tests after corrections.

    • Advice: Include time buffers in the project schedule specifically for revalidation testing after anomaly corrections to avoid delaying the production rollout.

    Tip : Prioritize testing of the most critical functionalities to ensure they are validated before moving on to secondary features.

  5. Test real-world scenarios:

    On the other hand, tests must reflect the reality of daily operations. Testing only theoretical scenarios risks leaving blind spots that could become problematic once the ERP is in production. Including scenarios that cover a variety of situations, including exceptional cases, is a more comprehensive approach.

    • Advice : Test not only standard processes but also special cases such as customer returns, canceled orders, and data entry errors.

    Tip Simulate scenarios where multiple users perform actions simultaneously to check the system's robustness and its ability to handle high loads.

  6. Ensure that the data used for testing is representative:

    Furthermore, to ensure that the tests are relevant, it is essential that the data used during testing is as close as possible to real data. This includes complete and varied data covering different categories of products, customers, and suppliers.

    • Advice : Use representative data sets that allow for testing the system's limits (e.g., a high volume of transactions or products) and that include various scenarios (e.g., national and international customers, batch-managed or bulk products).

    Tip: Also test the quality and integrity of migrated data if information is imported from an old system.

  7. Train key users to avoid misinterpretation errors :

    Finally, tests should be conducted by trained users to avoid any misinterpretation of results. If the user does not fully understand the ERP, they may mistakenly conclude that certain functionalities are not working when the issue lies in improper usage.

    • Advice: Schedule training sessions before the testing phase to ensure users are familiar with the ERP interfaces, modules, and processes.

    Tip: Distribute a user guide for the main features before the testing begins to facilitate system onboarding.

Don't let errors compromise your ERP project. A well-developed test plan is key to ensuring a smooth launch and successful adoption. 

Need support to secure the implementation of your ERP?

Our business analysis experts are by your side to guide you through the entire process: from defining requirements and drafting specifications to managing testing and overseeing the project until deployment.

To benefit from our expertise in business analysis and ensure a successful ERP project, from strategic planning to achieving your business objectives: Mail : contact@baamtu.com

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