SAP ECC end of life: the 2027 deadline, and the move to S/4HANA.

SAP ECC end of life: frequently asked questions

When does SAP ECC reach end of mainstream maintenance?

SAP ends mainstream maintenance for SAP ERP 6.0, the release commonly called SAP ECC, on December 31, 2027 for the most recent enhancement packages 6, 7, and 8. An optional extended maintenance phase runs to December 31, 2030 for an additional fee. SAP ERP 6.0 without an enhancement package, and with enhancement packages 1 through 5, already left mainstream maintenance on December 31, 2025. The deadline that applies depends on your exact release.

What is the difference between mainstream and extended maintenance?

Mainstream maintenance is the standard support included in your SAP agreement: legal and regulatory updates, support packages, and corrections. Extended maintenance is a separate, paid phase that continues those services for a limited window after mainstream ends, in this case to December 31, 2030. Extended maintenance buys time to plan and execute a transition; it is not a destination. After it ends, customers move to customer-specific maintenance, which provides no new corrections or legal changes.

Is S/4HANA the only path off SAP ECC?

SAP S/4HANA is SAP's own successor and the default target for most ECC customers, and SAP has committed innovation and maintenance for S/4HANA into 2040. It is not the only option. A move off ECC is the right moment to test whether S/4HANA still fits the operating model or whether another platform suits the business better. Lightbridge ERP is an independent, vendor-neutral advisor: it assesses S/4HANA against the full landscape and recommends on fit, not on a vendor quota.

What is the difference between a greenfield and brownfield S/4HANA migration?

A greenfield migration rebuilds the system on S/4HANA from a clean design, which is the chance to retire years of accumulated customization and redesign processes. A brownfield migration converts the existing ECC system in place, preserving configuration and history at the cost of carrying forward old complexity. A selective or hybrid approach moves some data and redesigns the rest. Lightbridge ERP decides the right approach in the assessment, based on the state of your ECC system, not on a fixed template.

How long does an SAP ECC to S/4HANA transition take?

An SAP ECC to S/4HANA transition typically runs twelve to twenty-four months for a mid-market or enterprise organization, and longer for complex multi-entity landscapes. The schedule is driven by the number of entities, the depth of custom code, integration complexity, and the chosen approach of greenfield, brownfield, or selective. The 2027 mainstream deadline and the 2030 extended-maintenance deadline mean the planning window for most organizations is already open.

What happens if we stay on SAP ECC after maintenance ends?

The system keeps operating, but SAP stops delivering legal and regulatory updates and new corrections once your release leaves maintenance. Statutory and tax compliance then becomes a manual burden, security and stability fixes are no longer issued, and the system falls further behind the platforms it integrates with. Customer-specific maintenance is available but provides no new fixes. Staying is a deliberate risk decision and should be governed as one.

Why use an independent advisor instead of an SAP partner for the transition?

An SAP reseller or implementation partner is compensated when you buy and deploy SAP, so the destination is effectively decided before the assessment begins. Lightbridge ERP accepts no vendor kickbacks, no reseller margins, and no partner-tier quotas. It assesses whether S/4HANA or another platform fits, then leads the transition with in-house project management and technical leadership. Hands-on S/4HANA build is executed by rigorously vetted SAP partners under that leadership, so the client manages one accountable program owner.