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    Allari - The JDE Lifecycle Partner
    03

    Stage 3

    ECC Operations During Migration

    Your S/4HANA Build Is Active. Your ECC Environment Is Ours.

    The pre-migration work is done. ECC is stabilized, documented, and ring-fenced. The SI is building S/4HANA. Your internal team is supposed to keep ECC running AND support the migration build simultaneously. By week four, ticket aging climbs. By week eight, both workstreams are in crisis. This is where the structural separation happens — one team runs, one team builds.

    This is the stage that defines whether a migration succeeds or fails. Not the SI selection. Not the budget. The question is whether the organization running the legacy environment is structurally separated from the team building the new one. We provide that separation. Your team owns the migration build. We own ECC. Neither workstream compromises the other.

    Recognition Pattern

    You're here if…

    • An SI is under contract and the S/4HANA migration is active — blueprinting, build, or testing already underway.
    • Your internal SAP team is being split between keeping ECC running and staffing S/4HANA design workshops — and both workstreams are showing the strain.
    • Your Basis administrators are expected to run ECC production AND stand up the S/4HANA development and quality landscapes simultaneously.
    • Your ABAP developers are doing ECC break-fix during the day and ATC remediation at night — neither workstream getting full attention.
    • Your security administrators are managing both ECC authorization roles and the mandatory S/4HANA role redesign at the same time — role redesign is not optional; ECC roles do not transfer.
    • Ticket aging is climbing in ECC, response times are slipping, and the migration build is also behind — both workstreams are approaching crisis.
    • Leadership is asking why the team can't do both, and the honest answer is: because no one structured them to.

    Risk Assessment

    What's at risk

    This is where most SAP migrations fail. Not because S/4HANA is the wrong platform. Not because the SI is incompetent. Because the internal team trying to keep ECC running is the same internal team trying to build the new one. The staffing gap is not incidental. It is structural. And the structure will not self-correct.

    By week four, ECC ticket aging climbs. By week eight, resolution time doubles. By week twelve, both workstreams are in crisis — ECC is fragile, the migration build is behind, and the SI is beginning to generate change orders. The dual-landscape period compounds the pressure: two full SAP environments running simultaneously, duplicate infrastructure costs, duplicate data maintenance, and every ECC production change that must be evaluated for retrofit into the S/4HANA development environment.

    The failure cases are not outliers. Zimmer Biomet: $172M lawsuit against Deloitte, five go-live slips, $94M in change orders on a $69M contract, a warehouse management module that ruptured the supply chain at launch. National Grid: $585M in post-go-live stabilization costs, 850 contractors at $30M per month for over two years. Different industries. Different SIs. The same root cause — no structurally separated run team. Industry data confirms: 75% of ERP implementations fail to meet objectives. The differentiator in the 25% that succeed is consistently the same: the client maintained operational stability on the legacy side while the new platform was built.

    What We Deliver

    Full ECC Run-State Custody

    Full ECC Operational Custody

    Production support, Basis administration, CNC/transport governance, security administration, vendor management, after-hours coverage — all of it, absorbed by embedded Allari specialists. Not shared with your team. Not partially delegated. Full custody. Your internal team does not touch a legacy ECC ticket from Day 61 forward.

    Structural Bifurcation

    The people running ECC are not the people building S/4HANA. Different teams. Different cadences. Different accountability structures. This is the separation that 75% of migrations attempt and fail to maintain — because it requires a structural decision, not just a scheduling adjustment. We provide the structural half.

    The Operational Airlock

    A dedicated, structurally isolated layer that absorbs all reactive operational friction from the ECC side. Incident response, performance degradation, transport conflicts, failed batch jobs, security tickets, vendor escalations — all of it is caught before it reaches the build team. No context-switching. No bleed-through.

    Dual-Maintenance Transport Governance

    Every ECC production change is evaluated against the S/4HANA development environment for retrofit. Automated tracking replaces spreadsheet-based manual tracking. Transport conflicts across both landscapes are identified and resolved before they create cutover-weekend surprises.

    Knowledge Capture via Dynamic Runbook™

    Every undocumented process, tribal procedure, and vendor-specific workaround in the ECC environment is captured in the first 30 days and continuously updated throughout the engagement. The institutional knowledge your team has accumulated over years is codified before those people are permanently redeployed to the migration build.

    Cutover Support and Data Extraction Coordination

    ECC must be at a known, stable state for each mock migration cycle — SAP Activate methodology recommends a minimum of two full mock runs before production cutover. Each mock requires a clean data extraction from ECC production. We coordinate both.

    Deflationary Cost Model

    Capped-consumption billing — as root causes are eliminated and ECC operational volume declines on the path to end-of-life, costs decline with it. The model is self-funding: capacity recovered from ECC operations funds the migration investment. This is the inverse of fixed-fee operations, where the vendor has no incentive to reduce volume.

    Engagement Structure

    How it works

    Phase 1 — Days 1–30: Knowledge Transfer

    Full ECC environment documentation. Every process, every undocumented workaround, every vendor escalation path, every batch schedule captured in the Dynamic Runbook™. Shadow-mode operations — Allari team observes, documents, and begins building operational context alongside the existing team.

    Phase 2 — Days 31–60: Gradual Assumption

    Allari takes increasing ownership of the reactive queue. Internal team validates resolution quality and knowledge accuracy. Handoff gates confirmed. Transport governance transferred. On-call coverage extended to 24/7.

    Phase 3 — Days 61–90: Full Operational Custody

    Internal SAP team is structurally separated from the ECC run queue. The Operational Airlock is active. The build team has full focus on S/4HANA. ECC operational accountability belongs entirely to Allari.

    Phase 4 — Day 90+: Sustained Custody Through Migration Completion

    Full operational ownership through go-live. Large enterprise migrations typically run 18–36 months from contract to cutover. Allari holds the ECC run state for the full duration. As the environment winds down toward end-of-life, operational volume compresses. Costs follow. The engagement concludes at a defined, structured endpoint.

    Field Evidence

    Proof

    W.L. Gore & Associates — 5-Year JDE-to-SAP Migration. 3,500+ users across 45+ countries. A 25-person internal ERP team. A 5-year migration to SAP with IBM as the SI. 26,518 service interactions managed by Allari across the full migration period. Zero escalations to the build team. Zero production disruptions. 100% production uptime from handoff to go-live.

    The framing matters: we did not migrate. We provided production support while IBM migrated. That structural separation — a fully independent run team holding the legacy environment in full custody while the SI built the new platform — is exactly what allowed the migration build to proceed without operational interference. This is the model applied to SAP ECC. The platform changes. The structural principle does not.

    38.4%

    Capacity Recovered

    9.3×

    Faster Resolution

    5.4 wk

    Median Payback

    19%

    Year-1 TCO Compression

    Your migration is active. ECC is on you.

    We take full operational custody of your SAP ECC environment so the build team can build. Start with a 45-minute capacity audit — no pitch, no obligation.