Appendix: tender and negotiation worksheets

A usable worksheet records the disputed service, evidence that could change the conclusion and action unavailable without it. Recording only a preferred supplier and total preserves the answer while losing its reason. The connected records follow the fictional long-service case from requirement through conditional commitment to subsequent control. Their completeness is analytical: received offers, observed performance and an approved tender procedure remain absent. A practitioner can therefore inspect the decision branch without mistaking the filled record for transaction evidence.

The service-led and acquisition-led offers share a common requirement. Numerical fields come from the canonical fixture and computation; enquiries and authorisations are illustrative. The record connects their recurring quantities and supplied life to the service-led cost advantage, separates technical from operating evidence needs and shows how a concession could alter the comparison. A decision owner using it in practice must replace those descriptions with approved scope and retained evidence before treating an enquiry as resolved.

The requirement record governs the comparison's meaning. The hypothetical buyer seeks common operating service through the supplied horizon, with executable maintenance and replacement. Supplier life and downtime remain unverified, so the record permits analytical comparison while withholding an unconditional award recommendation. Reproducing the numbers does not supply the contract or feasibility evidence needed for commitment. The requirement owner must preserve that boundary when carrying the comparison into procurement.

The equalisation record preserves the received perimeter separately from the analytical adjustment. In this fiction there are no received documents, so the completed record explicitly says that offer scope is assumed common. In a real case, each row would identify the actual source clause, the buyer's retained obligation and the basis of any estimated adjustment. An analyst's scope addition would remain an analysis amount until an authorised revised offer confirmed the obligation and price. That distinction prevents an internally complete comparison from being mistaken for a supplier promise.

The service-led case uses smaller operating, energy and downtime quantities and a longer supplied life. Those are not interchangeable evidence requests. The annual electricity input calls for a comparable duty and measurement basis. Operating expense calls for its maintenance and labour perimeter. Downtime hours call for an interruption and recovery definition. Life calls for the usage, support and replacement conditions that make it meaningful. The connected record names these separate requests, so a general supplier assurance cannot be used to close every premise at once.

The performance enquiry should explain how its result would change the action. The hypothetical committee asks whether the lower electricity quantity applies at the required duty and whether the lower downtime quantity is consistent with available maintenance and response. A satisfactory answer would support retaining those premises in an admissible comparative case. An incomplete answer would keep the case conditional and require a disclosed alternative or further test. A failed mandatory service condition would remove the alternative from the admissible set, regardless of its computed lifecycle cost.

Define the test before seeing a favourable result. A performance protocol should state the relevant operating condition, delivered service, measurement basis, witness, treatment of interruptions and acceptable evidence. The illustrative record can name those categories without inventing a universal pass threshold. The actual requirement owner must provide the acceptance condition. If the test changes the duty or relaxes the delivered service for one offer, its apparent energy saving may describe a smaller service. A faithful enquiry protects the common denominator as well as the measured quantity.

The result record should contain a decision branch, not simply a status colour. Suppose the actual evidence is inconclusive because the test duty differs from the requirement. The branch is to withhold support for the comparative quantity, request a relevant test or retain an explicitly uncertain alternative case. It is not to substitute the supplier's favourable catalogue point for the unresolved duty. Suppose the evidence supports the quantity but identifies a maintenance condition. The branch is to establish that condition's ownership, cost and feasibility before treating the performance as executable. The evidence can be true while the proposed operating arrangement remains incomplete.

Negotiation then targets a named mechanism rather than a generic reduction. The acquisition-led alternative has the larger lifecycle cost in the long-service case. The committee could seek a price concession, a supported operating change or an altered responsibility package, provided the applicable process permits the enquiry. Each route needs a complete revised comparison. A lower price under the current engine also changes later replacement amounts because the same acquisition figure is reused. A service promise needs both its performance basis and the obligation that makes its consequence executable.

The completed concession record deliberately stops short of inventing a supplier acceptance. It identifies a candidate package, the requested evidence and the rerun required. A reduction in quoted acquisition that removes installation or support could worsen the usable-service perimeter even if the invoice falls. A longer stated life without credible operating conditions could remove a replacement mechanically while weakening evidence. A guarantee could shift a remedy but leave the buyer's interruption intact. The package must therefore be assessed as a connected service and cash commitment rather than a collection of favourable field edits.

The fictional service-led preference supports an authorised enquiry into decisive performance, scope and life premises; supplied inputs do not yet support unconditional commitment. The memorandum should retain both alternatives and name who can close each question. Unresolved feasibility stays beside the cost result, and absence of contrary evidence leaves an assumption unresolved. This gives the committee a definite next action without converting a precise total into an award basis.

A specific, executable preference can authorise proportionate enquiry, preparation or negotiation. Record the evidence that permits progression and the result that stops it. Conditions the organisation cannot maintain leave the lower-cost preference inexecutable; conditions supported within its authority permit a rebuilt decision-ready comparison. The analytical author cannot grant that progression because computation is complete, nor can a conditional preference be recorded as an approved award.

The commitment record must reconcile the final accepted package with the evaluated case. It should identify the actual offer, scope, performance conditions, retained responsibilities and permitted remedies. The model revision must match the authorised package. If a final negotiated price or duty differs from the evaluated version, the team needs a consistent updated comparison, not an informal assertion that the change is favourable. A small apparent concession can still alter replacement, support or terminal obligations. Version identity lets a later reviewer distinguish the approved commitment from an earlier analysis.

Post-award control begins with the same premises that drove selection. The owner should monitor delivered service, operating quantities and interruption incidence under relevant conditions. Actual cash and the counterfactual evaluated alternative remain separate records. A favourable operating variance against a forecast does not by itself establish avoided cost from the choice. A changed duty can lower consumption while lowering service; a deferred maintenance task can reduce current expense while weakening future reliability. The monitoring record should therefore retain the mechanism, delivered denominator and cause of a difference.

Close-out should preserve lessons without rewriting the original decision. If a decisive premise was wrong, the organisation can identify whether evidence was weak, the operating condition changed, a supplier obligation failed or an internal responsibility was not performed. Those causes imply different remedies. A model can have been computed correctly and still have supported the wrong decision because its input was unsupported. Equally, a sound original decision can face a later adverse condition outside its reasonable basis. The connected records make those distinctions inspectable rather than judge quality solely from the final invoice.

The worksheet set should remain compact enough to operate. Use the fields that preserve the actual disputed mechanism, evidence branch and authority, and avoid adding signatures that no one has a substantive reason to provide. The records are useful when a practitioner can say what is compared, what remains uncertain and what can happen next. Their connected structure prevents a cost ranking, a performance test and a contract revision from becoming separate stories. Each describes the same service commitment from a different decision point, with enough retained identity for another person to challenge it.

The completed card creates a specific conditional branch. If the Maintenance lead receives a relevant duty record but it omits the maintenance condition needed for the stated life, that owner cannot sign the life premise as supported. The Commercial manager records the missing condition in the packet rather than replace it with the favourable model input. The committee can renew a defined enquiry, rebuild a consistently shorter-life case or stop progression. The current authorisation does not permit equipment purchase while the condition remains unresolved. This is a worked procedure with an explicit owner and consequence, rather than an unanswered question about who should act.

An accepted analytical branch is equally specific. If the designated owners support common service, relevant duty, retained scope and life conditions, the Commercial manager reproduces a case using those supported premises. The committee checks whether its cost leader and mandatory conditions still support the intended action. Passing that branch establishes an analytical basis for the next authorised procurement decision. It does not claim that a fictional supplier has accepted a price or that the committee can disregard applicable tender conditions. The card therefore demonstrates useful conditional authority while preserving the distinct evidence and process needed for an actual award.

A revised commercial proposition must face the same discipline as the original comparison. The fictional committee now receives two alternative analytical propositions for the acquisition-led case. Neither is an actual supplier response. The first offers only a smaller acquisition amount. The second combines that same amount with changed life, operating, electricity and interruption premises. The unchanged service-led alternative provides the reference. Common horizon, financial discounting, electricity escalation, lost-contribution convention and terminal credit remain fixed. The cases therefore test a proposed response against its complete cost consequence instead of assuming that a lower quoted price resolves the original disadvantage.

The price-only proposition preserves the initial operating mechanism. It also reprices the later replacement because the canonical workbench reuses the stated acquisition amount at the supplied life boundary. A comparison that credits the initial reduction while leaving replacement priced at the original amount would depart from this engine. Conversely, describing the reduction as an operating improvement would invent evidence the proposition does not contain. The complete frozen input and output make this narrow response visible. The package proposition changes several fields together; its total result is a package comparison, not an empirically identified separate effect of each field.

The price-only response fails the claimed route to a new cost preference. Acquisition-led still has the larger lifecycle present cost, so choosing it because its quotation fell would reproduce the original lowest-price error. The revised amount changes the complete acquisition and replacement burden but leaves the larger operating, electricity and interruption quantities in place. The committee can acknowledge that the proposed reduction has a real calculated effect while rejecting the stronger claim that it now has the lower lifecycle cost. That is a falsifiable response decision, rather than a general instruction to negotiate harder.

The revised service package reverses the calculated leader. Its smaller acquisition, longer supplied life and changed recurring quantities together create a lower present-cost proposition under the same horizon. Removing the replacement event is one material channel; changing recurring operating and interruption amounts is another. The decomposition shows each channel separately without assigning an empirical attribution to the whole package. This result warrants a revised analytical preference only when the proposed fields belong to the same executable service. A longer asserted life that depends on maintenance omitted from the operating amount would not be a supported package merely because the calculator ranks it first.

The fictional evidence packet remains incomplete. The Operations director holds REQ-DUTY as the common requirement; the Maintenance lead has not received LIFE-PACK or MNT-PACK support; the Commercial manager has not received the comparable operating perimeter; the relevant duty measurement for ENG-PACK and recovery conditions for REC-PACK are absent. These are explicit illustrative evidence states, not observed supplier records. The revised package therefore advances to a defined clarification route while paid commitment remains held. Its cost lead creates a useful question, not a substitute for the answer.

The original contribution is the connected test and record, not the invention of discounting or lifecycle comparison. Primary lifecycle and appraisal guidance already supplies the rationale for comparing costs under a common service boundary. This paper adds explicitly controlled mechanism pairs, a complete proposed-response decomposition and a traceable authority branch that follows the result back to its premises. A reader can challenge the actual frozen case rather than accept an unexplained recommendation. The claim ledger, exact input and companion workbench make the comparison inspectable, while the completed record shows which evidence would permit the next action.

The demonstrated decision advantage is specific. A lowest-quotation rule would favour the price-only acquisition proposition even though the lifecycle computation still favours the unchanged reference. A cost-only rule would then favour the revised service package without confronting its missing life, duty and maintenance support. The connected method rejects the first claim and holds the second commitment while allowing a useful evidence enquiry. Its advantage lies in identifying the error and the next bounded action in the same record. It does not imply that the fictional package can be delivered, financed or lawfully awarded by an actual organisation.

The connected record also exposes selective gate application. In a hypothetical review, an evaluator demands a witnessed consumption test from the premium offer while accepting the cheaper offer's assumed service life without challenge. The record should show that asymmetry and ask whether each premise receives scrutiny scaled to its own decision consequence. Symmetry does not require identical tests for different mechanisms. It requires comparable treatment of supported advantage and decisive uncertainty. If the cheaper offer's shorter-life branch would create replacement, its life evidence matters; if the premium's advantage disappears across every supported consumption branch, additional precision may be less useful. This is an operational test of the proposed method, not an acceptance claim.