Properly Preparing for HANA Migration

If your SAP-Business-One database has been growing for years, it becomes apparent quite quickly before a migration: old reports, unclear custom developments, duplicates, unresolved legacy issues in accounting, and no one really knows which interface writes what at night. This is exactly where it is decided whether you properly prepare for a HANA migration or if the project will later consume time, nerves, and money.

A HANA migration is not a major project if it is well planned. However, it becomes unnecessarily complicated when companies try to improvise both technical conversion and process cleanup simultaneously. For medium-sized businesses, start-ups, and growing companies, the rule is: create clarity first, then migrate. Not the other way around.

Why Preparation Determines Project Success

Many companies do not underestimate the migration itself, but rather the state of their current system. On paper, SAP Business One runs. In everyday life, there are Excel side worlds, manual corrections, historical special cases, and add-ons that are used but not documented. HANA does not make such issues bigger - but more visible.

This is the good news and at the same time the crux. Those who want to properly prepare for the HANA migration do not have to reinvent everything. It’s about honestly assessing the current state and securing the parts that really support day-to-day business. The rest belongs on the test bench.

Properly Preparing for HANA Migration: First Define the Scope

The most common mistake is a too soft project scope. Then the migration starts with the idea of “first making a technical switch,” and two weeks later, it suddenly also involves new workflows, new reports, new document logic, and a cleanup project for the entire item master. This is exactly how delays occur.

A better approach is a clear scope on three levels. First: What absolutely must be included in the HANA environment so you can continue working? Second: What should be reviewed and specifically optimized? Third: What is deliberately left out because it is historically grown but no longer business-critical today?

This separation is pragmatic and saves discussions. It also helps internally because management, departments, and IT do not have to decide everything at once.

Fully Capture Systems, Add-ons, and Interfaces

Before setting dates, you need a reliable picture of your system landscape. This includes the SAP-Business-One version, database status, deployed add-ons, individual customizations, connected third-party systems, and all import and export processes. Particularly critical are silent dependencies - such as an old shipping tool, a self-built SQL report, or a financial interface that only one person in the company really knows.

Especially in smaller companies, this knowledge is often not well documented. This is normal but risky. Good preparation means not only inventorying technology but also naming responsibilities. Who checks what, who decides in case of conflicts, who approves tests?

Data Quality Over Speed

Those migrating to HANA should not automatically carry over every data burden. It’s not about erasing the past. It’s about early detection of poor master data, inactive records, duplicate business partners, or unclear account assignments. Otherwise, you simply migrate problems faster.

Particularly relevant are item masters, business partner data, inventory information, and financial data. If there are inconsistencies there, you will notice them later in reports, evaluations, and subsequent processes. A thorough data review takes time but saves significantly more time in rework.

Without a Test Plan, Every Migration Becomes Expensive

A test system alone is not enough. You need a test plan that fits your company’s daily routine. Many teams test too technically and not enough process-oriented. Then it is checked whether documents can be created, but not whether the entire process from quote to order, delivery, invoice, and payment really works as in day-to-day business.

A good test plan is based on real business transactions. Which processes run daily? Which are critical for month-end closing, shipping, purchasing, or production? Which special cases must not break? These scenarios must be fully run through before go-live.

This also applies to permissions, print layouts, approvals, and evaluations. In many projects, these are not the big showstoppers, but the points where departments lose trust. If a sales team cannot print clean documents on the first day, the mood quickly deteriorates - even if the database was technically perfectly migrated.

Involve Key Users Early

Migrations rarely fail due to missing software. They are more likely to fail because departments are involved too late. If key users come into play shortly before go-live, they see problems when there is hardly any time left for corrections.

Therefore, relevant people from finance, operations, sales, purchasing, or inventory should be brought to the table early. Not for long workshops without results, but for clear decisions. Which reports are indispensable? Which masks or fields are used daily? Which old workarounds should deliberately disappear?

This has a second advantage: internal acceptance increases. Those who were involved in the preparation are more likely to support the transition later.

Plan Timing Realistically Instead of Optimistically

Many companies schedule the migration date where it looks good on the calendar. Between quarter-end, inventory, vacation time, and year-end closing, almost every week seems somehow feasible. In practice, this is rarely the case.

Realistic timing means taking your operational rhythm seriously. If month-end closing is tight, if seasonal peaks are running, or if a warehouse project starts in parallel, the migration should not be squeezed into exactly this period. An ostensibly quick date is expensive if no one internally has time for tests, approvals, or queries.

The cutover itself also needs clear planning. When will the last data be transferred? Who stops interfaces? Who checks document number ranges, user rights, and print forms? Who decides if a critical point is still open on go-live morning? Those who answer these questions cleanly in advance significantly reduce hectic.

Technical Preparation Is Important - But Not Everything

Of course, the migration also includes the technical foundation. Infrastructure, versions, add-on compatibility, backup strategy, and performance requirements must be thoroughly checked. Especially when companies come from a grown environment, it makes sense not only to rely on “somehow runs” but to consciously build the target architecture.

Nevertheless, technology is only part of the truth. A HANA database does not benefit you if processes continue to run with shadow lists and manual corrections. The real leverage often lies in using the migration as an opportunity to eliminate unnecessary detours. Not as a mammoth project, but with healthy pragmatism.

This is where good preparation separates from overengineering. You don’t need a transformation program with ten sub-projects. You need clarity, priorities, and a partner who truly knows SAP Business One and doesn’t start understanding your reality only during the project.

What Must Be in Place Before Go-live

Shortly before the transition, things often get hectic. Therefore, a simple rule helps: Everything that is business-critical for the first working day must be reliably checked and approved. This includes master data, open documents, core processes, interfaces, user roles, and standard evaluations. Nice-to-haves can wait. Business-critical topics cannot.

Equally important is a clear support framework for the first days after go-live. Who is reachable? How are errors prioritized? What is a real blocker and what is just a training issue? Companies that underestimate this phase experience unnecessary unrest - even if the migration was technically clean.

Those who work with a fixed price, clear scope, and clear responsibilities have a real advantage here. This is precisely why specialized projects do not rely on consultant language but on reliable processes without surprises. This is also why many companies prefer to work with a specialized partner like RConsult for a HANA migration rather than a generalist who only manages SAP Business One on the side.

When More Preparation Is Sensible - And When Not

Not every company needs the same depth before a HANA migration. If your system landscape is manageable, there are hardly any custom developments, and data quality is decent, preparation can be compact and quick. However, if there are many add-ons, international requirements, multiple clients, or historically grown special processes, you need more lead time.

The point is not to sell as much analysis as possible. The point is to choose the appropriate preparation. Too little preparation leads to surprises. Too much preparation slows you down without added value. Both are unnecessary.

If you want to properly prepare for your HANA migration, don’t think first of technical slides or project plans. Think about your real operation on Monday morning after go-live. Can your teams work? Are the numbers correct? Are the processes running? If these questions are cleanly answered, the migration is not only accomplished but also sensibly implemented.

The best preparation is not recognized by large presentations but by the fact that the transition ultimately seems unspectacular - that’s exactly how it should be.