All you need to know about EPR implementations in an easy-to-follow step-by-step guide.
“ERP is commonly misunderstood as a computer system. It is not. It is a people system made possible by software and hardware.”
An ERP implementation can change the way a company works from the first customer enquiry to the final invoice, payment, delivery, or service action.
It can connect sales, purchasing, warehouse work, production, finance, HR, customer service, and reporting. But the system does not create success by itself. People create success by using the system consistently, following clear processes, and sharing the right information.
This is why an ERP implementation should never be treated as an IT installation only.
It is a business improvement project. It affects daily responsibilities, decision-making, communication, data quality, and the way departments work together.
Good preparation makes the difference between a system that employees trust and a system that becomes another unused screen beside Excel files.
Begin With the Business Problem, Not the Software
Before choosing an ERP or starting the implementation, the company should understand what it wants to improve.
Where does the business lose time? Where do errors happen? Which information is missing? Which departments work with different numbers? Where are customers waiting too long for an answer? Which reports are difficult to prepare? Which processes depend too much on one person’s memory or personal spreadsheet?
These questions help define the real purpose of the project.
One company may need better warehouse control. Another may need clearer production planning. A service company may need stronger customer management and mobile technician workflows. A distributor may need purchasing, customer-specific prices, stock traceability, and faster delivery processing.
The ERP system should support the company’s most important processes. It should not be selected only because it has a long feature list or looks impressive in a demonstration.
Choose a Partner, Not Only a Product
The ERP provider becomes an important part of the business during implementation and often long afterwards.
The right partner should understand more than software features. They should understand how companies work in real life: sales pressure, warehouse deadlines, production problems, supplier delays, customer expectations, financial control, and the challenge of changing habits inside a team.
Before selecting a provider, the company should understand how the partner works. How do they analyze business processes? How do they plan the implementation? How do they handle data migration, training, testing, support, and changes in scope? What experience do they have in the company’s industry?
A successful ERP project needs openness from both sides.
The provider cannot design the right system if important information is hidden or ignored. Employees may believe that a small detail is unimportant, but that detail may affect a warehouse process, production rule, customer requirement, tax process, or reporting need.
The more the ERP partner understands the real business, the stronger the final solution will be.
Build the Right Internal Project Team
The ERP provider brings system knowledge. Your company brings business knowledge.
The implementation team should include people who understand the real work in sales, purchasing, warehouse, production, finance, HR, service, and management. These employees may not be technical experts, but they know where daily problems happen and what information is needed to solve them.
Management must also be involved. An ERP project often requires decisions about priorities, process changes, responsibilities, data ownership, and employee time. Without visible management support, the project can lose direction.
The internal team should have clear responsibilities. Someone needs to provide data. Someone needs to approve process decisions. Someone needs to coordinate testing. Someone needs to collect employee feedback. Someone needs to make sure that open questions do not remain unanswered for weeks.
A strong project team does not need to be large. It needs to be available, informed, and able to make decisions.
Plan the Project in Practical Phases
ERP projects become difficult when everything is attempted at once.
A company may want a new CRM, full warehouse scanning, production planning, purchasing control, finance integration, HR workflows, customer portals, e-commerce, advanced dashboards, and several external integrations all in the first release.
This creates pressure and confusion.
A better approach is to create a clear long-term vision and divide the work into realistic phases. The company can begin with the processes that create the greatest value or solve the most urgent problems. Once the core system is stable, more advanced functions can be added.
For many businesses, the first phase includes clean master data, customers, suppliers, products, sales orders, purchasing, warehouse stock, invoicing, and essential reporting. Later phases may include production planning, mobile warehouse work, advanced BI, field service, automation, AI-supported analysis, or specialized integrations.
A phased approach does not mean lower ambition. It means more control.
Review and Improve Existing Processes
ERP is an opportunity to improve the way the company works.
Many businesses have processes that developed over years because systems were limited, information was difficult to access, or one employee created a workaround that became permanent. There may be repeated data entry, unnecessary approvals, unclear handovers, hidden Excel files, or reports created manually every month.
Before configuring the ERP, the company should document how work happens now.
How does a customer order move through the business? How are materials purchased? How does stock enter and leave the warehouse? How is production started and completed? How are invoices checked? Who approves what? What happens when something goes wrong?
The company can then decide what should remain, what should change, and what should become automated.
The aim is not to copy old inefficiencies into a new system. It is to use the new system to create a clearer and more reliable process.
Data Migration Needs Care and Attention
Data migration means moving useful information from old systems into the new ERP.
This may include customers, suppliers, products, price lists, stock balances, open orders, invoices, accounting balances, employee records, production structures, and document history.
It is often one of the most sensitive parts of the project.
Old data is rarely perfect. There may be duplicate customer records, outdated addresses, incorrect product codes, inconsistent units of measure, missing prices, old suppliers, or stock figures that do not match the physical warehouse.
Moving poor data into a new ERP only creates a cleaner-looking version of the old problem.
The company should decide which information is needed for daily work and which historical data can remain safely archived. It should clean and validate the important records before import. Test imports should be reviewed carefully, and key users should confirm that the results are correct before the system goes live.
Clean data is one of the strongest foundations for a successful ERP.
Training Makes the System Work in Real Life
Employees do not need to learn every function in the ERP. They need to learn the functions that matter for their role.
A warehouse employee needs practical knowledge about receiving goods, stock locations, warehouse movements, picking, delivery, and stock differences. A salesperson needs to manage customers, leads, offers, orders, and follow-ups. A finance user needs to manage invoices, payments, approvals, and reports. A manager needs to understand dashboards and key business information.
Training should use real business examples whenever possible. Employees learn faster when the product, customer, process, and situation are familiar.
The company should also plan for support after training. People will have questions when they begin working with real transactions. This is normal. What matters is that they know where to ask for help and receive answers quickly.
Training is not a one-day event before go-live. It is part of the change process.
Test the System Like a Real Business Day
Testing should not happen only in the IT department.
The company needs to test real business scenarios with people who understand the work. Sales should create orders. Warehouse teams should receive goods, move stock, pick orders, and prepare deliveries. Purchasing should create requests, compare offers, and receive supplier invoices. Production should test material consumption, work orders, and completed goods. Finance should test invoices, payments, taxes, and reporting.
The company should also test exceptions.
What happens if a supplier delivers the wrong quantity? What happens if a customer changes an order after stock has been reserved? What happens when a product is damaged? What happens if the invoice does not match the purchase order? What happens if a user does not have the correct permission?
These situations are where weak processes become visible. It is much better to find and solve them before go-live.
Prepare for Go-Live and the First Weeks After
Go-live is the day when the new ERP becomes part of real daily work.
It is an important milestone, but it is not the end of the project. The first days and weeks after go-live are when employees learn how the system works under real pressure.
The company should prepare a clear support plan. Employees need to know who can answer process questions, who can handle technical issues, and which problems are urgent. The ERP partner should know what level of support is expected during the transition period.
This phase is often called hyper care. It allows the company to solve early questions quickly, protect business continuity, and build trust in the new system.
The system will not need to be perfect on the first day. It needs to be stable enough for core work, supported by people who can improve it quickly.
Plan for Continuous Improvement
ERP implementation does not end after go-live.
As employees use the system, they will discover opportunities to improve reports, simplify workflows, add useful automation, refine user permissions, or connect additional business areas.
The company should review the ERP regularly. Are employees using the process correctly? Is data accurate? Are reports useful? Which activities still happen outside the system? Which manual tasks could be improved? Which new business requirements should be added?
This creates a living system that grows with the company.
Start With the Right Conversation
A successful ERP implementation begins with an honest view of how your company works today — and a clear view of where you want it to go.
SIX ERP helps businesses turn disconnected processes into one connected way of working. Our team works with your employees to analyze the business, prepare data, improve workflows, configure the right modules, train users, support go-live, and build a platform ready for future growth.
Book a SIX ERP implementation consultation today. We will help you assess your current processes, identify the most valuable first steps, and create a practical plan that turns ERP from a software project into a stronger business.
