An industrial group challenged an S/4HANA conversion proposal by rebuilding the Full Use Equivalent math, contesting the engine-conversion ratios, and locking the credit treatment of unused ECC entitlement.
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The group is a multi-business industrial manufacturer with thirty-one thousand five hundred named SAP users across discrete manufacturing, process manufacturing, and a small service-based vertical. SAP ECC 6.0 had been the operational backbone since 2009, with eleven engines layered on top. The conversion to S/4HANA had been planned for execution in two waves, with the first wave covering the discrete manufacturing business.
SAP's account team issued a conversion proposal totalling twenty-two million dollars, structured as a Full Use Equivalent (FUE) buy-up with a partial credit for the existing ECC entitlement, plus a separate engine-conversion line covering the eleven existing engines and a HANA runtime adjustment.
The Group CIO escalated the proposal to the CFO and procurement before any commercial discussion proceeded. The exposure was significant in absolute terms but more significant in conversion-precedent terms. A conversion at the opening figure would have set a baseline for the second wave, compounding the entitlement inflation across both businesses.
SAP's FUE proposal had been built against the provisioned named-user count of thirty-one thousand five hundred, applying the standard conversion ratios for Professional, Limited Professional, and Employee Self-Service users. The composite FUE count came to approximately fourteen thousand two hundred.
The engine-conversion line treated each of the eleven existing engines as a conversion to the equivalent S/4HANA module at the published price-book rate. No credit was offered for unused or retired engine capacity. The HANA runtime adjustment had been calculated against the projected HANA memory footprint for the converted estate rather than the current ECC footprint.
The credit for the existing ECC entitlement had been structured at approximately fifty per cent of net book value, with the residual value of unused capacity treated as forfeit on conversion.
We worked five tactics in parallel against the conversion proposal. Each one was grounded in the FUE definition, the contractual engine treatment, and the credit-conversion mechanics published in SAP's conversion guidance.
We ran a dormant-account purge and a transaction-history reclassification before the FUE calculation was finalised. The defendable named-user count was twenty-three thousand eight hundred against the provisioned thirty-one thousand five hundred, with the user-mix shifted toward Limited Professional and Employee Self-Service. The corrected composite FUE count was approximately ten thousand one hundred.
Of the eleven existing engines, four had been deployed but not used in production for more than twenty-four months. We documented the dormancy and requested credit treatment for the retired capacity. SAP accepted partial credit on three of the four, with the fourth converted to a smaller equivalent S/4HANA module at a reduced rate.
The HANA runtime adjustment had been calculated against a projected memory footprint that included the second-wave business. We requested a re-measurement against the first-wave footprint only, with the second-wave adjustment deferred to that conversion. The re-measurement reduced the HANA line by approximately one point eight million dollars.
We rebuilt the ECC entitlement credit calculation against the conversion guidance documentation. The credit was increased from fifty per cent of net book value to seventy-eight per cent, supported by the documented retirement plan for the legacy entitlement and the absence of any continuing-use clause in the original ECC contract.
The conversion was structured with a documented protocol for the second-wave conversion, locking the FUE methodology, the credit treatment, and the engine-conversion approach. The second wave will execute under the same protocol, removing the precedent-inflation risk.
The conversion closed at eleven point four million dollars against an opening proposal of twenty-two, a forty-eight per cent reduction. The first wave is now executed under the negotiated terms, with the second wave to follow under the same protocol. No additional FUE was purchased outside the documented entitlement.
Contractually, the FUE methodology is documented at the user-classification level with reconciliation rights against transaction evidence. The engine-conversion treatment is documented with named-engine credit terms. The HANA runtime is calculated against the actual footprint at conversion. The credit-conversion mechanics are written into the conversion agreement.
Total elapsed time from the conversion proposal to signed agreement was twenty-six weeks. The matter closed inside the planned conversion window and the second-wave conversion remains on the original timetable.
First, S/4HANA conversion proposals rest on the provisioned named-user count, the engine entitlement, and the HANA runtime calculation. All three lines move when the underlying evidence is rebuilt before the proposal closes.
Second, FUE composite counts are determined by the user-classification mix. The classification mix that goes into the conversion is the classification mix that produces the FUE total. Cleanup before conversion is non-negotiable.
Third, retired engines retain credit value when the dormancy is documented. The forfeit treatment is not contractual; it is a negotiating position. Fourth, the HANA runtime measurement basis is negotiable. Fifth, the credit-conversion calculation is mechanical and can be tested against the published guidance. The opening proposal is rarely the maximum credit available.
The conversion was sold as a price exercise. The negotiation that mattered was the FUE methodology and the credit calculation — everything else followed from those two lines.
Full conversion compliance — FUE methodology, engine-conversion treatment, HANA runtime measurement, and the credit-conversion maths that determine the final number.
Read the brief →The conversion is a renegotiation, not a price exercise. We restructure the FUE basis, the engine line, the HANA adjustment, and the credit treatment before the conversion closes.
Read the brief →The topic page sets out the licensing structure, the audit triggers, and the negotiation levers across this SAP product line.
A 3,500-word analyst paper covering the methodology behind the defence, with five numbered recommendations and the field evidence.
The pillar article in this cluster covers the licensing structure, the audit triggers, and the defence sequence applicable to estates like this one.
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One hundred-plus anonymised case files across audit defence, license compliance, contract negotiation, and S/4HANA conversion.
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