MENTARA
Book a call
Software Services

The S/4HANA decision is about process standardisation, not migration.

Deadline-driven SAP programmes carry decades of custom code forward and inherit the constraint they meant to remove. MENTARA works the standardisation decision.

Discuss an SAP priority Read the detail

More in Software Services

The decision in front of you

S/4HANA programmes are usually framed as technical migrations with a deadline attached. That framing is what causes the most expensive outcome: under time pressure, the safe-looking choice is to carry existing custom code and process variation forward, because re-examining them is slow and politically difficult.

The result is a new platform constrained by the same accumulated complexity, at considerable cost, with the standardisation benefit that justified the business case never realised. The technical migration succeeded and the investment did not.

The failure mode

Custom code is a record of decisions nobody revisits.

A long-running SAP estate accumulates custom developments, each written for a reason that made sense at the time. Many encode process variation that no longer reflects how the business operates, some duplicate capability the standard product has since acquired, and a proportion are simply unused — but establishing which is which requires analysis and business engagement that a deadline-driven programme rarely budgets for.

So it all moves. And because it moves, the clean-core principle that makes future upgrades cheap is lost at the outset, which means the next upgrade will be as painful as this one. The programme has spent the money and preserved the constraint.

The second failure is treating data migration as a technical task. Master data quality determines whether the new system is trusted, and organisations routinely discover during cutover that duplicate vendors, inconsistent material masters and orphaned records are business problems requiring business decisions — at the point in the schedule where there is no time to make them properly.

Capability

What MENTARA does.

01SAP strategy and roadmapThe standardisation decision framed explicitly: what moves to standard, what variation is genuinely justified, and what that choice costs at the next upgrade.
02Custom code and process assessmentWhat is used, what is duplicated by standard functionality, what encodes obsolete process, and a defensible retirement position.
03S/4HANA transformation supportProgramme design, sequencing and decision governance — usually alongside a large implementation partner rather than instead of one.
04Data readinessMaster data quality, ownership and remediation treated as a business workstream starting early, not as a cutover activity.
05Integration and extensionsExtension patterns that keep the core clean, and integration with the surrounding estate on explicit contracts.
06Testing and cutover assuranceIndependent assurance of test coverage, cutover planning and readiness criteria — an outside view of whether go-live is genuinely achievable.
Approach

How the work runs.

  1. 01 Make the standardisation decision explicit

    Surface it as a business decision with named owners and a stated cost, rather than letting it be settled by default under schedule pressure.

  2. 02 Assess the custom estate

    Usage, duplication and obsolescence, so retirement is a defensible position rather than an argument.

  3. 03 Start data remediation early

    Master data ownership and cleansing running well ahead of cutover, because these are business decisions and business decisions take time.

  4. 04 Assure readiness independently

    An outside assessment of whether test coverage and cutover readiness support the date — most valuable precisely when it is least welcome.

Questions

What buyers ask.

Are you an SAP partner? Can you run our S/4HANA implementation?

MENTARA does not currently hold SAP partner status, and a full S/4HANA implementation requires a large certified bench across many functional modules. Our role is best suited to the advisory and assurance work around such a programme.

Where we are useful is the work around it: the standardisation decision, custom code assessment, data readiness, decision governance and independent assurance — typically alongside the implementation partner rather than instead of them.

Can you give an independent view of a programme already running?

Yes, and this is our most common SAP engagement. An independent readiness or assurance review carries weight precisely because we have no stake in the go-live date and no revenue depending on the programme continuing in its current shape.

We have a deadline. Is standardisation realistic?

Partially, and being honest about which parts is the valuable output. A deadline-driven programme cannot standardise everything, but deciding deliberately which areas move to standard and which carry variation forward — with the future upgrade cost stated — is very different from letting the schedule decide by default.

06

Where MENTARA fits best.

Scope

We fit advisory, assessment, data readiness, decision governance and independent assurance — the parts where the constraint is judgement rather than certified functional headcount.

MENTARA is not an SAP implementation partner, so a full S/4HANA migration needs a certified prime with a substantial functional bench.

Where this connects

Bring the standardisation decision before the deadline makes it for you.

Share the business context, constraints and expected outcome. MENTARA will identify the relevant accountable route.

Submit your requirement

One partner. One plan. Measurable outcomes.