A successful ERP implementation is mostly about preparation, decisions and people. This checklist breaks the process into phases. Adapt it to your business; not every item applies to every project.
Phase 1: Prepare
- Agree the business objectives and how success will be measured.
- Appoint an internal project owner with authority to make decisions.
- Identify key users from each department.
- Confirm scope: which modules, branches and processes go live first.
- Agree a realistic plan with the vendor, including your team’s availability.
Phase 2: Design processes
- Document current processes and agree the future process for each.
- Decide approval rules, such as purchase limits and discount approvals.
- Agree the chart of accounts and reporting dimensions.
- Define document formats such as invoices and purchase orders.
- Record decisions in a signed-off design document.
Phase 3: Prepare data
- Clean master data: customers, suppliers, products and employees.
- Remove duplicates and inactive records.
- Agree which historical data will be migrated and which will be archived.
- Prepare opening balances for accounts, stock and open documents.
- Assign an owner to validate each data set.
Phase 4: Configure and test
- Configure the system according to the agreed design.
- Test end-to-end scenarios such as order to cash and procure to pay.
- Involve key users in testing, using realistic data.
- Record and resolve issues before go-live.
- Confirm reports produce the expected results.
Phase 5: Train
- Train key users in depth so they can support colleagues.
- Train each user on the tasks they will actually perform.
- Provide simple reference guides for common tasks.
- Confirm user access and roles before go-live.
Phase 6: Go live
- Agree a go-live date that avoids peak business periods.
- Import final opening balances.
- Stop using old systems for new transactions.
- Provide close support during the first weeks.
- Monitor key processes daily at first.
Phase 7: Stabilise and improve
- Review issues and user feedback regularly.
- Check that first month-end closes correctly.
- Plan additional modules or improvements once the core is stable.
- Keep training new staff consistently.
Omnegic’s implementation approach follows a similar structure. Timelines are agreed after reviewing your requirements.
Frequently asked questions
What is the most important factor in ERP implementation success?
Commitment from management and the availability of knowledgeable people from each department are usually more important than any technical factor.
Should we run old and new systems in parallel?
Some businesses run a short parallel period for critical processes, but long parallel runs double the workload. Agree the approach with your implementation team.
How long does ERP implementation take?
Timelines depend on scope, data quality and team availability, and should be estimated after requirements are reviewed.