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The Sign-Off Table

Lesson 6 of 6

Conversion sign-off

16 min

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At go/no-go 2, Sunday 14:00 of the go-live weekend, Grace's decision group decides whether Contoso runs on SAP S/4HANA on Monday or falls back to ECC. That decision is only as good as the criteria agreed in advance and the evidence collected during the weekend. Design both long before; rehearse both in the dress rehearsal.

Go/no-go criteria

Criteria must be specific, measurable during the weekend and owned. "Finance is OK" is not a criterion; "trial balance, AR, AP, assets and inventory comparisons for 1710 and 1810 at zero difference or explained, signed by Dan" is.

AreaCriterionSigned by
TechnicalSUM finished; no open errors; follow-on activities complete; technical smoke checks passedSam (Basis lead)
FinanceAgreed reconciliations within tolerance; accepted migration errors documentedDan (finance process owner)
Logistics and salesStock per plant and open orders reconcile; critical order-to-cash checks passThe sales process owner (with Maria, the O2C key user) and the logistics owner
Custom code and interfacesCritical interfaces connected and verified; critical custom functions pass smoke testsKenji and the integration lead
TimelineValidation done with buffer to Monday 06:00; rollback still possible if neededLuis (cutover manager)
DefectsNo open critical defect without an accepted workaroundPriya (test lead)

Contoso's go/no-go criteria. Each one has a named owner who signs during the weekend.

Over the go-live weekend, Grace's decision group takes two go/no-go decisions on evidence signed by the area owners before the Monday 06:00 point of no return.
The Sign-Off Table · thesignofftable.com/academy/sap-tst-404
  1. Area checksEach owner verifies their criteria with evidence
  2. Test lead summaryPriya consolidates results, defects and risks
  3. Cutover managerLuis confirms timeline and rollback position
  4. Go/no-go meetingGrace chairs the decision group; process owners and IT leads confirm their criteria
  5. Decision recordedThe decision group decides go, go with conditions or rollback; executives are informed
The sign-off chain for Contoso's production conversion weekend.
The Sign-Off Table · thesignofftable.com/academy/sap-tst-404

Rollback is part of the plan

A go/no-go decision is only real if "no-go" is executable. The rollback plan says how Contoso returns to ECC, up to which point in time it is possible, how long it takes, and what happens to anything done in the meantime. Technically, SUM's database migration option keeps the source database unchanged and offers a reset function until a point in the procedure; your plan must say what applies to your actual procedure and environment, confirmed with SAP and Sam. The latest go/no-go time is the last moment when rollback still fits before Monday 06:00.

  1. Are all go/no-go criteria met?Yes → go · No → next question
  2. Is every unmet criterion covered by an accepted workaround and owner?Yes → go with conditions, recorded · No → next question
  3. Is there still time to fix and revalidate before the latest decision point?Yes → fix, revalidate, reconvene · No → no-go: execute rollback
The go/no-go decision path, rehearsed in the dress rehearsal.
The Sign-Off Table · thesignofftable.com/academy/sap-tst-404

After go, sign-off continues. Agree a short list of hypercare checks for the first business days (first billing run, first payment run, first MRP run, first period-end tasks), with owners and expected results. The conversion is accepted when those pass and the obsolete data cleanup has been approved by finance, not when the system comes back on Monday morning.

The conversion is accepted only after the first business cycles pass in hypercare and finance approves the obsolete data cleanup.
The Sign-Off Table · thesignofftable.com/academy/sap-tst-404

What would you do?

At go/no-go 2 on Sunday 14:00, everything is green except one interface to the logistics provider, which fails. A manual workaround (uploading delivery files twice a day) exists and the logistics owner accepts it for one week. Rollback time has not passed. What should the meeting decide?

Key points
  • Agree specific, measurable, owned go/no-go criteria before the dress rehearsal, and rehearse them.
  • Run a clear sign-off chain from area owners to the test lead, cutover manager and Grace's go/no-go decision group.
  • Rollback must be executable, with a known latest decision point.
  • Record conditions and continue sign-off through hypercare and the first business cycles.

Check your understanding · not graded

Lesson check

  1. 1. Which is a well-formed go/no-go criterion?

  2. 2. What defines the latest go/no-go decision time?

  3. 3. When is the conversion fully accepted?