Upgrades are one of the most frequently deferred pieces of work on an enterprise Planisware platform. The reasons are rarely technical. Teams worry about what might break, they lack the capacity to test properly, and the business calendar never seems to offer a quiet window.
The result is a platform that drifts further from current versions, while each release makes the next upgrade harder to justify. A well-scoped regression approach changes that. It turns "we don't know what might break" into a defined, repeatable body of evidence.
Start with an inventory, not a test plan
Before writing a single test case, build an inventory of what makes your environment yours. In most enterprise deployments, that includes:
- Custom scripts and scheduled processes
- Formulas and calculated fields, especially those feeding reports or financial views
- Workflows, states and approval logic
- Reports and dashboards used in governance forums
- Integrations, inbound and outbound, with their schedules and error handling
- Security configuration, including roles and access rules
This inventory is the foundation of an impact assessment. It shows where upgrade risk actually sits. Usually that's a relatively small number of heavily customized areas rather than the whole platform.
Rank by business criticality
Not everything deserves the same depth of testing. Rank each area by what it supports and when:
- Processes tied to fixed business events — portfolio reviews, budget cycles, quarter-end reporting
- Data flows that other systems or teams depend on
- Functionality used daily by large user groups
- Everything else
Criticality determines test depth. It also informs timing: an upgrade scheduled just before a major portfolio review carries different risk than one scheduled just after.
Test business processes, not screens
The most useful regression tests follow real work from start to finish. For example:
- Create a project from a template and progress it through a stage gate
- Submit, review and approve a resource request
- Run a scheduled actuals load and reconcile the result against the source
- Produce the monthly portfolio review pack and compare it to the previous version
Process-based tests catch the interactions between configuration, scripts and data that screen-by-screen checks miss. They also give key users something they recognize during UAT.
Reconcile reports before and after
Reporting is where upgrade issues are most visible to leadership, and where they're easiest to miss in testing. Where possible, run key reports against the same data in both the current and upgraded environments and compare the outputs systematically. Differences are not always defects, but every difference should be explained.
Test integrations end to end, including failure paths
An integration that works on a clean test file can still fail in production. Test the full path — extraction, transformation, load and downstream use — and deliberately test what happens when something goes wrong: a malformed record, a missing reference, a timeout. Confirm that errors surface where your support team will actually see them.
Keep UAT focused
User acceptance testing works best when it's short, well-prepared and targeted. Give key users scripted scenarios for their critical processes, a clear way to log issues, and a defined window. Open-ended "have a look around" UAT tends to produce either silence or noise.
Plan the cutover and the first week
Regression testing doesn't end at go-live. Define a short post-release validation checklist, covering scheduled processes, integrations, critical reports and access, and run it immediately after deployment. Agree in advance who is watching what during the first reporting cycle on the new version.
Make it repeatable
The first structured regression pack takes real effort. The second takes far less. A maintained set of process-based tests, a current customization inventory and a report reconciliation routine turn every future upgrade and release into a smaller, more predictable piece of work. That is often the difference between upgrading on your schedule and upgrading when you're forced to.
If an upgrade has been sitting on your roadmap, we can help assess the impact, build the regression approach and support testing through go-live. Discuss an upgrade or release.