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SAP Dual Maintenance

Keep Systems Aligned During Transformation with Dual Maintenance for SAP

With Dual Maintenance for SAP, synchronize business-as-usual custom development so nothing is missed at go-live — without cumbersome code freezes.

Book a Custom Code Consultation

Innovate Freely. We Handle the Complexity.

smartShift’s Dual Maintenance solution allows your business-as-usual development to continue unimpeded while you take on SAP transformation projects—enabling innovation in while ensuring your future-state environment is fully synchronized with the latest changes for a smooth go-live.

What You Get

Keep Moving While You Transform.

With smartShift Dual Maintenance, you get the confidence to move fast without risk. Dual Maintenance enables business agility during your S/4HANA transition—keeping Production and Development systems aligned and ready for go-live.

Enable Business Innovation During Transition

Continue enhancements and bug fixes in ECC without compromising your S/4HANA build.

Minimize Double Work

Apply changes once—smartShift ensures that they are properly implemented in the target system.

Keep S/4HANA Optimized

Transformed changes adhere to SAP Clean Core and S/4HANA compatibility standards, ensuring readiness for future upgrades.

Maintain Full Transparency

Every change is traceable, documented, and validated—ensuring stability, visibility, and control across both systems.

Maintain stability and momentum across parallel systems.

Parallel Systems, Diverging Code

During S/4HANA transformations, organizations typically run ECC and S/4HANA in parallel. Ongoing ECC enhancements, fixes, and updates must also be reflected in S/4HANA—forcing teams to choose between slowing innovation with long code freezes or accepting growing divergence while the project is underway.

Error-prone, time-intensive manual rework

Production development freezes that slow innovation

Escalating project timelines and business risk

Innovate Freely. We Handle the Complexity.

smartShift Dual Maintenance removes risk by automating the comparison, conflict resolution, merge, and remediation of ongoing ECC code changes into the S/4HANA project system. Built on patented smartShift Intelligent Automation®, it integrates seamlessly with existing change control, development, and testing processes—eliminating manual replication and ensuring all ECC updates are accurately synchronized into S/4HANA.

Integrates into your processes for managing code development and testing

Merges and transforms changes to guarantee S/4HANA compatibility

Delivers full traceability for transparency and validation

The smartShift Advantage

smartShift delivers unmatched speed, accuracy, and assurance for your S/4HANA journey. Our automation-first approach eliminates risk, accelerates timelines, and guarantees results—backed by deep SAP expertise and proven performance at enterprise scale.

Enterprise-Grade Accuracy and Speed

Transform millions of lines of code in weeks with 99.99% automation accuracy—powered by patented Intelligent Automation®.

Predictable, Risk-Free Delivery

Fixed price and timeline guarantees eliminate budget surprises and project delays.

Trusted by Global SAP Leaders

Leading SAP customers around the world rely on smartShift to future-proof their custom code and accelerate transformation.

Fast, Reliable Outcomes

Leading SAP customers worldwide rely on smartShift to future-proof their custom code and accelerate transformation.

The Proven Leader in SAP Custom Code Modernization

Transformation Projects Completed

0 Billion+

Lines of Code Transformed

1 Million+

Manual Labor Hours Eliminated

Fortune 500 Companies Choose smartShift

What our customers are saying

"Companies already deeply entrenched with SAP should seriously think about smartShift, which is the best solution for custom code remediation. When you’re doing your S/4HANA transformation, I’d advise you to include smartShift in your approach. Inject smartShift early, when the train is still moving— otherwise, you’ll have to stop the train like we did. Or you might get into a train wreck.”

Charles Ahn, Director of SAP Technology Enablement and Integration Kimberly-Clark

"You hear about S/4HANA upgrades going south. That did not happen to us. The number of defects we had after go-live was so tiny it was just incredible."

Keith Smith, SAP Solutions Director, CONA

Upgrade Before the Deadline Hits

If you’re facing an upcoming S/4HANA version upgrade, the clock is ticking — and the risks are real. Whether you’re under pressure to meet end-of-maintenance deadlines or dealing with unstable custom code, smartShift helps you take control with automation, precision, and speed.

Talk to a Custom Code Expert

Get a complete picture of your custom code and walk away with the insights you need to streamline development, reduce technical debt, and confidently modernize your SAP environment.

Solution Overview

Keep both ECC and S/4HANA systems aligned, compatible, and future-ready throughout your transformation—without disruption.

Download the Brief

FAQs: What SAP Customers Need to Know

What is dual maintenance for SAP?

Why is dual maintenance necessary during an S/4HANA transformation?

How does smartShift support dual maintenance?

What are the business impacts of manually maintaining multiple SAP systems?

Manually maintaining multiple SAP systems—typically necessary during a multi-year S/4HANA transformation where a legacy ECC system and a new S/4HANA system run in parallel—creates several severe business and operational impacts. Because developers must manually apply every daily bug fix or enhancement from the legacy system to the new project landscape, the business suffers from the following consequences:

Resource Drain and High Costs: Manual synchronization is a highly time-intensive process that requires developers to do double the work. Managing these transitions manually demands a multitude of expensive IT resources, pulling highly skilled personnel away from strategic, value-adding projects just to duplicate code.
Errors, Instability, and Rework: Manual code replication is inherently error-prone. If manual migrations are missed or coded incorrectly, small gaps emerge between the two systems. These deviations can trigger system instability, require extensive rework, and cause major delays during testing phases.
Stifled Business Innovation (Code Freezes): To maintain control and avoid the chaos of manual dual maintenance, IT teams are often forced to impose strict "code freezes" on the legacy ECC system. These freezes prevent developers from releasing new enhancements, effectively halting business innovation, delaying operational support, and driving up technical debt.
Escalating Timelines and Project Risk: The complexity of manually keeping parallel environments perfectly synchronized creates a massive administrative headache. The inevitable errors and testing delays ripple through the project, escalating overall S/4HANA project timelines, increasing cutover risks, and creating a barrier to SAP modernization.

Ultimately, attempting to maintain parallel systems manually forces an organization to choose between halting ongoing business innovation or accepting bloated project budgets and massive technical risk.

Does dual maintenance eliminate the need for development freezes?

When should dual maintenance be introduced in a transformation project?

Can dual maintenance reduce overall migration costs?

Yes, dual maintenance significantly reduces overall migration costs, whereas attempting to manage dual maintenance manually drastically inflates them.

Manually maintaining two parallel SAP systems—such as a legacy ECC production system and a new S/4HANA project landscape—requires a multitude of expensive IT resources to duplicate every daily code change, bug fix, and enhancement. This manual double-work is highly time-intensive and error-prone, often triggering extensive rework, testing delays, and costly escalations to the overall project timeline.

By implementing a Dual Maintenance solution, organizations can reduce overall migration costs in several key ways:

Drastically Reduces Labor Costs: Automation eliminates the need for developers to manually recode and apply changes to both systems. A Forrester TEI study found that organizations can reduce dual maintenance costs by 20% and save a significant portion of the Full-Time Equivalents (FTEs) that would otherwise be required to run manual synchronization. During its S/4HANA transformation, Jabil reduced its dual maintenance costs by 20% and avoided adding 30% extra development time to every project because the automation seamlessly handled the code replication.
Avoids Costly "Code Freezes": To maintain control of manual dual maintenance, companies typically impose strict code freezes, which halt business innovation and delay value delivery. Automation enables continuous synchronization, allowing your IT team to keep deploying revenue-generating enhancements in the legacy system without compromising the new S/4HANA build.
Eliminates Expensive Rework and Errors: Manual code replication frequently results in deviations between systems that cause instability and require expensive troubleshooting. Automated dual maintenance compares, merges, and transforms the code algorithmically, eliminating the human errors that disrupt testing phases and ensuring the code is fully compliant before it reaches the new environment.
Accelerates the Overall Timeline: By removing the administrative burden, testing delays, and complex code merging associated with manual processes, automated dual maintenance accelerates the project and helps keep massive S/4HANA migrations on schedule. Finishing a project months faster yields massive cost savings by avoiding prolonged consulting fees and extended IT overhead.

SAP Dual Maintenance

Keep Systems Aligned During Transformation with Dual Maintenance for SAP

With Dual Maintenance for SAP, synchronize business-as-usual custom development so nothing is missed at go-live — without cumbersome code freezes.

Innovate Freely. We Handle the Complexity.

Keep Moving While You Transform.

Enable Business Innovation During Transition

Minimize Double Work

Keep S/4HANA Optimized

Maintain Full Transparency

Maintain stability and momentum across parallel systems.

Parallel Systems, Diverging Code

Error-prone, time-intensive manual rework

Production development freezes that slow innovation

Escalating project timelines and business risk

With smartShift, you get the confidence to move fast without risk.

Innovate Freely. We Handle the Complexity.

Integrates into your processes for managing code development and testing

Merges and transforms changes to guarantee S/4HANA compatibility

Delivers full traceability for transparency and validation

The smartShift Advantage

Enterprise-Grade Accuracy and Speed

Predictable, Risk-Free Delivery

Trusted by Global SAP Leaders

Fast, Reliable Outcomes

Fixed price, fixed timeline, guaranteed delivery.

The Proven Leader in SAP Custom Code Modernization

Transformation Projects Completed

Lines of Code Transformed

Manual Labor Hours Eliminated

Fortune 500 Companies Choose smartShift

What our customers are saying

"You hear about S/4HANA upgrades going south. That did not happen to us. The number of defects we had after go-live was so tiny it was just incredible."

Upgrade Before the Deadline Hits

Talk to a Custom Code Expert

Solution Overview

FAQs: What SAP Customers Need to Know

What is dual maintenance for SAP?

Why is dual maintenance necessary during an S/4HANA transformation?

How does smartShift support dual maintenance?

What are the business impacts of manually maintaining multiple SAP systems?

Does dual maintenance eliminate the need for development freezes?

When should dual maintenance be introduced in a transformation project?

Can dual maintenance reduce overall migration costs?