SAP has given its ECC customers a deadline: migrate to S/4HANA or lose mainstream maintenance. That deadline creates pressure, and pressure is a well-understood commercial lever. When customers feel they have no choice, they sign agreements they would otherwise have negotiated harder. The terms locked in at that moment can govern commercial relationships for a decade.
An independent review before signing is not about delaying the migration. It is about entering that conversation with an accurate picture of what you have, what you are agreeing to, and where the flexibility actually sits.
What SAP is selling and what you are buying
A S/4HANA migration agreement is not a straightforward software upgrade. It typically bundles licence conversion, new subscription terms, professional services, and future roadmap commitments into a single commercial package. Each of those components carries its own pricing logic, and the overall deal is rarely presented in a way that makes the individual components easy to interrogate.
SAP's account teams are experienced negotiators with full visibility of your current estate, your consumption data, and your contract history. Your side of the table often consists of people who were not party to the original ECC agreement and who are working from a summary of what you currently own rather than a line-by-line analysis. That asymmetry shapes the outcome.
The licence conversion problem
One of the most consequential decisions in any S/4HANA migration is how existing ECC licences are mapped to S/4HANA equivalents. SAP's standard conversion rules are complex, and the way they are applied to your specific estate can materially affect the cost of your future licensing position.
Customers who accept the first conversion proposal without independent verification often discover later that they have taken on more capacity than they need, or that they have accepted terms on licence types that do not align with how their business actually uses the system. Neither outcome is easy to unwind once the agreement is signed.
The migration agreement is one of the few moments in the SAP relationship where a customer has genuine leverage. That leverage disappears the moment the contract is executed.
Indirect access and the S/4HANA boundary
SAP's Digital Access model, introduced alongside S/4HANA, changes how third-party system integrations are licensed. If your business runs other applications that touch SAP data, whether through APIs, middleware, or custom interfaces, the migration agreement is the point at which those integration scenarios need to be examined and correctly scoped.
Getting this wrong at the point of signature does not mean the problem surfaces immediately. It means the problem surfaces during the next audit or True-Up review, when your negotiating position is considerably weaker and the cost of remediation is considerably higher.
Professional services terms deserve the same scrutiny
Migration agreements frequently include professional services components: implementation support, hypercare periods, and training. These are often presented as fixed-price or capped-time engagements, but the scope definitions that govern them can be narrow. Anything that falls outside the defined scope becomes a change request, billed at day rates that were not the subject of the same negotiation as the headline agreement.
An independent review examines the services terms alongside the licence terms. It looks at scope definitions, escalation clauses, and the conditions under which SAP can vary the agreed commercial basis. These are not theoretical risks: they are the standard points of friction in SAP migration programmes that run longer or more complex than the initial plan anticipated.
The window for leverage is narrow
SAP has a strong interest in completing your migration. That interest is at its highest before the contract is signed. Once you have committed, the commercial dynamic shifts: SAP's priority becomes delivery, and any concerns about terms become a matter for contract management rather than negotiation.
An independent review conducted before signature identifies the points where terms can be improved, clarifies what your current estate actually entitles you to, and gives you a basis to go back to SAP with specific, substantiated positions rather than general discomfort. That is a very different conversation to having than the one that happens after the ink is dry.