SAP Excellence
Cutting-Edge IT Services

You can recognize winners at the start – losers too.
We have been supporting SAP projects for 30 years - in various roles. Often as the responsible project manager, both on the customer and consultant side.
Behind S4lab is REBASE3 GmbH. With the creation of the S4lab brand, we have further developed our SAP service offerings to meet the demands of the SAP S/4HANA world. While our original Rebase3 logo was still heavily influenced by SAP R/3, S4lab demonstrates our clear focus on the future and the possibilities of SAP S/4HANA.

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We have seen and experienced (almost) everything. We have stumbled over many pitfalls ourselves. We have written down these experiences in several specialized books. Don't make the same mistakes we have made. Please look at our publications.
Our Services
How we support your S/4HANA transformation
S/4HANA transformation projects are, like any ERP/SAP project, a complex matter. It is (also) about information technology, but at least as much about organisational changes and processes. Such a project affects almost the entire company.
Very few companies can manage this without external support. We support you in optimising your project, selecting the right service provider and choosing the right project organisation.
Data Migration
We offer a variety of data migration strategies to ensure that your company can fully benefit from the many years of expertise of our SAP data migration specialists.
Our services accompany you through all phases of data migration, starting with meticulous project planning, data analysis, scoping, data cleansing, mapping, implementation, data migration testing, validation through to cutover planning and productive loading into your SAP S/4HANA system.
SAP Development
For transformation projects, we offer development services in a variety of programming languages and tools, such as ABAP, ABAP OO, JavaScript, XML, Open SQL, SQLScript, Native SQL, SAP HANA Core Data Services (CDS), OData, SAP Fiori, SAPUI5, dialog programming, reporting, SAP WebDynpro.
For programming interfaces, we use a wide range of technologies such as SAP Gateway, OData, IDoc, ALE, Business Object Processing Framework (BOPF), Application Programming Interface (BAPI), Web Services, SOAP, Business Remote Function Call (RFC).When extending the SAP standard, we use the Enhancement Framework, Switch Framework, Business Add-Ins (BAdI), User Exits, Customer Exits, Business Transaction Events (BTE), among others.
We also offer code reviews, Clean ABAP, ABAP Test Cockpit (ATC), SAP Code Inspector (SCI), SLIN, runtime analysis and optimization, HANA readiness, custom code migration and the programming of forms with SAP Adobe Forms, SAP SmartForms and SAPscript.
SAP Business Intelligence (BI)
We offer solutions for the implementation of simple and complex reporting requirements. We have expertise in a variety of SAP tools such as:
- SAP BW/HANA und SAP BW on HANA
- SAP Data Warehouse Cloud (DWC)
- SAP Analytics Cloud (SAC)
- SAP Embedded Analytics
Our experts support you with planning, design, implementation and testing.
SAP Basis
When it comes to the administration and security of SAP systems, you need a reliable partner with in-depth knowledge of SAP Basis.
Whether SAP ERP, SAP S/4HANA, SRM, CRM, PI or PO, we master the stack, from the installation or migration of an existing SAP system to technical support and maintenance.
We support the implementation of your security requirements with our expertise.
SAP Integration
With our experience, we support you throughout the entire life cycle of your integrated SAP platform. We use SAP integration platforms such as:
- SAP Cloud Platform Integraton (CPI)
- SAP Platform Integration (PI)
- SAP Process Orchestatration (PO)
- SAP Business Technology Plattform (BTP)
Take advantage of our wealth of experience in the design and implementation of your project and operations.
Our Podcast Series
In our podcast, three generations of a company come together to document their story of business succession and delve deep into the world of IT, particularly SAP topics. Look forward to exciting discussions, valuable insights, and practical tips surrounding technology and leadership as they evolve over time. Join us on our journey through the challenges and successes of modern entrepreneurship.
All episodesPublications
SAP-S/4HANA-Projekte erfolgreich managen
White papersavailable

Von der Vorbereitung, über die Realisierung, bis hin zum Go-Live
Successfully Managing S/4HANA Projects

The Definitive Guide to the Next Digital Transformation
Erfolgreiche SAP-Projekte

Aufwände einschätzen, Kapazitäten planen, Ziele erreichen
Das SOA-Praxisbuch für SAP

Von der ersten SOA-Idee bis zum tatsächlichen SAP-Betrieb
White Papers
In this section, we provide you with exclusive and free samples of established publications on the subject of SAP and its software products. They are written by our experts. So take a look and see for yourself the experience of numerous projects that we have successfully realized with our customers.
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02 | Was ein SAP-S/4HANA-Projekt so anders macht
Estimate efforts, plan capacities and achieve goals - a standard reference work with many helpful guidelines and principles on how to ensure the success of your SAP project
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03 | Das SAP-S/4HANA-Projekt: Wie es tatsächlich ist
Estimate efforts, plan capacities and achieve goals - a standard reference work with many helpful guidelines and principles on how to ensure the success of your SAP project
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04 | Externe Ressourcen – Fluch und Segen
Estimate efforts, plan capacities and achieve goals - a standard reference work with many helpful guidelines and principles on how to ensure the success of your SAP project