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SAP S/4 conversion — full cycle
From evaluation through preparation, build, cutover and go-live. One thread from the first workshop to productive use.
SAP S/4 · Project leadership · Fiori · Authorizations
Your SAP project
is our business.
End-to-end SAP S/4 conversions, project leadership for conversions, upgrades and rollouts — and customer-side project lead when you need someone on your side of the table.
- Evaluation to go-live
- Customer-side project lead
- English & German
Experience of our founder, Michael Achleitner
- 20+years of SAP experienceOperations, logistics, integration, rollouts
- 10countries with project & rollout experienceAT · DE · CZ · ES · RO · GB · IT · FR · JP · CN
- 6certificationsIPMA Level C · ISTQB · IREB · SAP XI/PI
Services
From evaluation to go-live — and everything SAP needs around it.
02
Project leadership — conversions, upgrades, rollouts
Scope, milestones, risks and stakeholders. Clear steering so the program stays on track.
03
Customer-side project lead
We represent your interests with integrators and business teams — decisions prepared, options transparent, no black box.
04
SAP Fiori — configuration & setup
Launchpad, apps and roles configured so users get the right screens from day one.
05
Authorization concepts & implementation
Concepts that hold up in audit and operations — designed, built and handed over for day-to-day support.
06
SAP workflows & processes
End-to-end process design in SAP: approvals, notifications and handovers that match how your organization actually works.
Selected experience
Experience of our founder — conversions, upgrades and rollouts.
Michael Achleitner’s professional track record: projects from his work as an independent consultant (GoDigital Consulting) and from earlier in-house roles. Client projects are described by industry only. The two manufacturing S/4 conversions went live in 03/2026 and 05/2026.
Workflows, custom Fiori apps & AI pilot
Implementation of new workflows with custom Fiori apps; digitalization consulting and process optimization; pilot project with AI support in workflows.
- Role
- Digitalization consultant, process optimization
S/4 conversion · manufacturing company A
Project leadership and migration consulting for an SAP S/4 conversion, including ABAP adaptations for S/4.
- Role
- Project lead, migration consultant, authorizations, Fiori, ABAP adaptations for S/4
- Team
- 10 consultants · 2 client IT · 15 business department staff
- Duration
- 15 months plus a 3-month pre-project
- Go-live
- Over a weekend
S/4 conversion · manufacturing company B
Project leadership and migration consulting for an SAP S/4 conversion, including ABAP adaptations for S/4.
- Role
- Project lead, migration consultant, authorizations, Fiori, ABAP adaptations for S/4
- Team
- 10 consultants · 2 client IT · 15 business department staff
- Duration
- 15 months
- Go-live
- Over a weekend
S/4 conversion of an HR system
Project leadership and migration consulting for the S/4 conversion of an HR system in the education sector, including implementation and customizing of workflows on S/4 2023.
- Role
- Project lead, migration consultant
- Team
- 4 consultants · 3 client IT · 5 business department staff
- Duration
- 15 months
- Go-live
- In 3 days, over a weekend
S/4 conversion of an ERP system
SAP S/4 conversion of an ERP system in the education sector.
- Role
- Project lead, migration consultant, authorizations & Fiori
- Team
- approx. 6 consultants · 4 client IT · 6 business department staff
- Duration
- 9 months
- Go-live
- In 3 days, over a weekend
S/4HANA upgrade
Manufacturing company, Germany: project leadership and test management for the S/4HANA upgrade 1809 → 2022 FP2.
- Role
- Project lead, test management
HANA database migration & S/4 preparation
Project leadership and architecture: HANA DB migration and S/4 preparation in the education sector.
Windows → Red Hat · MSSQL → HDB · EHP 8 for ECC 6.0 · SAP HR · BW · PI · SolMan
Data center & HANA migrations
Data center migration, hardware refresh and HANA DB migration at two companies in the health sector.
SAP implementation & international rollout
Project leadership for an SAP implementation at a manufacturing company (approx. 300 employees) and rollout to four further sites, including China.
Further engagements
- 2026: sandbox setup and test migration for a client’s S/4 evaluation (building materials services, incl. ABAP conversion).
- 2025: sandbox setup and test migration for a client’s evaluation (process industry, building materials).
- 2020–2022: optimization after an S/4 implementation (DE), ERP implementation in China (automotive), digitalization and business process optimization in mechanical engineering (AT), SAP support in plant engineering (AT), software testing and QM in AR/VR development.
Earlier — in-house roles
Fiori self-service, SAP WM & rollouts
Fiori Employee Self Service (business travel, absence, sick notes, time management, payslips) and approval workflows for purchase requisitions and orders in MM and Fiori; SAP WM in the Czech Republic (migration MS Access → SAP); HR rollouts in Germany and the Czech Republic; company-code rollouts (FI/CO, MM, HR, PS) in Spain and Romania.
Global SAP logistics rollout
Project lead for the global rollout of SAP and LMS logistics in DE, GB, IT, FR, JP and CN, on site; subproject lead SCM for the SAP implementation in Japan; integration of SAP with two non-SAP systems for budget control and post-calculation in plant engineering; Teamcenter subproject lead and set-up of test management.
Integration, development & program coordination
SAP XI/PI and SAP APO development, integration and proof of concept; migration Microsoft BizTalk → SAP XI/PI; PPS modernization (ABAP); project coordination in a large program with approx. 170 staff, 30 consultants and 100 workshops (assistance to project management on two blueprints).
Approach
We stay until the result is live — not until the slide deck is done.
Short cycles. One named contact. Deliverables your finance and business teams can work with — timesheets, handovers, go-live checklists.
- EvaluateReadiness, scope, options
- PreparePlan, sandbox, data & custom code
- BuildConversion, Fiori, roles, workflows
- CutoverRehearsals, checklists, sign-off
- Go-liveHypercare & handover to operations
Short cycles
Visible progress every week instead of big-bang surprises.
One named contact
You always know who is responsible — no hand-offs between account managers.
Usable deliverables
Timesheets, handovers and go-live checklists your teams can actually work with.
About
Senior SAP practice, without the overhead.
A-Cons Limited is based in Larnaca, Cyprus (HE 470070). Founded by Michael Achleitner. Our focus is organizations in Central Europe — industry, higher education and specialized program work — in English and German.
- Based in
- Larnaca, Cyprus
- Focus
- Central Europe
- Sectors
- Industry · Higher education · Programs
- Languages
- English · German
About Michael
Michael Achleitner
Founder & Principal Consultant
SAP project lead and consultant with more than 20 years of experience in SAP operations, logistics, integration and international rollouts. Focus on S/4HANA conversion, authorizations, Fiori and business process optimization in industry, education and health. Certified to IPMA Level C, ISTQB and IREB.
Career
- since 09/2019Independent consultant & ownerGoDigital ConsultingProject leadership and migration consulting for S/4HANA conversions and upgrades (brownfield, prestudy, go-live support) in industry and education.
- 06/2017 – 09/2019Group Manager Business ServicesMid-sized international industrial companyLed 4 internal and 5 external staff; responsible for SAP operations, further development and global rollout; budget responsibility, outsourcing, senior IT project management.
- 06/2014 – 05/2017Product Manager SAP LogisticsInternational plant-engineering groupSAP MM logistics and site logistics; global rollout of site logistics; interfaces to external systems (ALE, web service, CSV, RFC).
- 12/2010 – 06/2014Product Manager Teamcenter DocumentsInternational plant-engineering groupSubproject lead with SAP scope; SAP interfaces Teamcenter to SAP and CAD; test management; offshore components in India.
- 04/2007 – 06/2009SAP Consultant & DeveloperGroup IT of an international steel & technology groupSAP XI/PI and SAP APO: development, integration and proof of concept.
- 2003 – 03/2007SAP Developer & IT AdministratorSoftware companySAP development and SAP Basis administration.
Certifications
- IPMA Level C · Certified Project Manager
- ISTQB Certified Tester Foundation Level (CTFL)
- ISTQB Test Manager (CTAL-TM)
- IREB Certified Requirements Engineer
- SAP Certified Technical Consultant XI/PI
- SAP Certified Development Consultant XI/PI
Technologies
Contact
Let's talk about your SAP project.
Tell us where you stand — evaluation, running project or upcoming go-live. We'll get back to you promptly.
- Emailoffice@a-cons.eu
- Phone+357 97787996
- AddressA-Cons Limited
61-63 Lord Byron Street
6th floor, office 602
6023 Larnaca, Cyprus - VATCY60147483K