Epicor Upgrade Regression Test Effort Calculator
Upgrade plans often budget for the installer and forget the testing. This calculator estimates the test hours, developer fixes and calendar days for a regression cycle from your test case count, failure rate and team size.
Your numbers
Business scenarios plus custom BPMs, reports, dashboards and integrations.
Diagnosis, change and unit test by a developer.
Retests include setup and checking related areas.
Your results
Planning estimate for one regression cycle. Real upgrades may need several cycles, environment builds and sign-off time that are not included.
Testing days vs number of testers
Sweeps Testers from 1 to 20, holding your other inputs fixed.
Upgrade readiness review
Optional: we can review your customizations and suggest where to focus upgrade testing.
Optional. The tool and every export work without this. No spam.
How to use it
Count the test cases you actually need: core transactions, then every customization, BPM, report, dashboard and integration. Estimate average minutes per case and a first pass failure rate from past upgrades. Add the effort to fix a failure, a retest multiplier and the number of testers with their productive hours. The tool returns total hours, developer effort and elapsed days.
- Weight cases toward customizations, which fail most often.
- Use failure rates from your own previous upgrade or patch cycles.
- Run the estimate for pessimistic and optimistic failure rates.
The formulas
First pass hours are cases times minutes divided by 60. Failures are cases times the failure rate. Retest hours are failures times minutes per case, scaled by a retest factor to reflect setup and surrounding checks. Developer hours are failures times fix effort. Calendar days are total test hours divided by testers times productive hours per day.
Reading the chart
Adding testers shortens elapsed days with diminishing returns in practice, because environment access, data setup and defect triage do not scale. The model is linear, so treat the chart as a lower bound. If developer hours dwarf test hours, the failure rate is the real risk, and simplifying customizations before the upgrade pays back.
Common mistakes
Teams test only happy paths, skip month-end and period-close scenarios, and forget that custom reports and Excel-linked dashboards also break. Using a stale copy of data makes results meaningless. Keep a written test script per case so results can be repeated for the next cycle, and plan a second cycle for fixes.
Frequently Asked Questions
How many test cases are typical?
It depends on the modules and customizations in use. Many mid-size manufacturers end up with a few hundred scenarios once they include reports and integrations. Build from your actual process list, not a generic number.
What failure rate should I assume?
Use your own history if you have it. If not, test the rate sensitivity by running a low and a high case, since heavily customized systems usually see more failures than lightly customized ones.
Do I need more than one cycle?
Usually yes. After fixing failures you retest, and a final confirmation pass before go-live is common. Multiply the estimate by the number of cycles you plan to run.
Can automation reduce this?
For stable, repeated scenarios, automated API or UI tests can cut first-pass hours in later cycles. The setup effort is real, so it pays off mainly when you upgrade or patch often.
Netray can help generate and run regression tests against your Epicor customizations. The calculator is free either way.
Related Tools
Epicor DMT Data Load Time Calculator
Plan DMT load windows by combining record counts, throughput, error rates and fix time into total hours.
EpicorEpicor BPM Directive Overhead Calculator
See how many milliseconds and server hours your BPM directives add per transaction and per day.
EpicorEpicor Task Agent Schedule Load Calculator
Calculate Task Agent utilization from recurring schedules, runtimes and slots, and find how many slots you need.
More Epicor tools
See all- Epicor Kinetic Customization Change Request Form Template
- Epicor Kinetic Go-Live Cutover Plan Template
- Epicor Kinetic User Access Request Form Template
- Epicor Kinetic BPM Directive Inventory Worksheet
- Epicor Kinetic Scheduled Task Register Worksheet
- Epicor Kinetic Custom Report Inventory Worksheet
- Epicor Kinetic Data Migration Mapping Worksheet
- Epicor Kinetic Data Load Effort Calculator
- Epicor Business Object Services Reference
New to Epicor ERP? Start with the Epicor ERP guide and toolkit, or plan with Training Path Builder, ERP Certification Study Planner, Upgrade Path Planner.
Keep exploring
Free tools
- Epicor Kinetic Data Load Effort CalculatorEstimate total data migration hours for an Epicor project from record counts, error rate and number of test cycles.
- Epicor Kinetic Upgrade ChecklistA phase-by-phase upgrade checklist covering inventory, testing, integrations, cutover and rollback for Epicor Kinetic.
- Epicor Kinetic Upgrade Readiness AssessmentTen questions scoring how ready your customizations, BPMs, reports and integrations are for an Epicor upgrade.
ERP fixes and how-tos
- Epicor Kinetic Update Schedule: Release Cadence, Versions and Upgrade PlanningHow Epicor Kinetic releases are numbered and scheduled, how cloud and on-prem updates differ, and how to plan upgrades and regression testing.
- Convert Epicor Classic Dashboards to KineticHow to convert Epicor Classic dashboards to Kinetic during an upgrade: what carries over, what must be rebuilt, and how to verify each dashboard.
- Epicor Upgrade Services: Moving From 10.2 to Kinetic Without SurprisesPlanning an Epicor 10.2 to Kinetic upgrade: running both versions in parallel, 1099 checks, client installer options, and DIY versus a partner.
AI on your ERP
- Private AI for Epicor Kinetic Cloud, Outside the Multi-Tenant BoundaryRun a private LLM on Epicor Kinetic private cloud or Kinetic Cloud data via BAQs, REST v2 and Data Fabric, keeping sensitive manufacturing data off shared AI.
- AI for Epicor Vantage, Vista, and E9, and a Real Kinetic Upgrade PathStill on Epicor Vantage, Vista, or E9? Add a private LLM over that Progress OpenEdge database now, and use it to plan a Kinetic upgrade with real data, not guesswork.
Integrations
- How to add an AI chatbot to Epicor KineticAdd an AI chatbot to Epicor Kinetic: an internal assistant for planners and buyers or a customer portal bot, grounded in BAQs and runnable fully on-prem.
- How to add AI agents to Epicor KineticHow to add AI agents to Epicor Kinetic: a tool layer over the REST v2 API and BAQs, MRP exception triage, PO expediting, and human approval before any write.
Software
- Epicor KineticEpicor Kinetic explained for manufacturers: modules, REST API, BAQs, deployment, strengths, limits and alternatives to compare before choosing or upgrading.
- Epicor CPQEpicor CPQ is a cloud configure-price-quote product with visual 3D configuration for manufacturers. Modules, ERP integrations and alternatives explained.