{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp06_four_proposal_generalization60_20260803","cell_id":"representation_independent_interface_contract__accounting_auditing","arm":"COMPLETE_PROPOSAL_PORTFOLIO","candidate_id":"cand_reconciliation_case_behavioral_contract_02","proposal_index":2,"version":0,"title":"Representation-Independent Contract for Account-Reconciliation Cases","problem":"When an organization replaces spreadsheet-based account reconciliations with a workflow platform, the close team and auditors may discover that “prepared,” “reviewed,” and “certified” were defined by workbook formulas, tab names, cell colors, filename conventions, vendor status codes, and informal handling of reconciling items. Two implementations can contain the same balances and items yet permit different approvals, aging calculations, reopen behavior, or claims of completion. Because the reconciliation is not defined independently of its representation, management lacks a reusable way to determine whether a replacement preserves the control’s behavior.","actors":["Account-reconciliation preparer","Independent reconciliation reviewer","Controller or close-governance owner","Close manager consuming certification status","Financial-systems owner maintaining reconciliation implementations","Internal audit or controls-testing personnel","External auditor independently evaluating control design and evidence","Data-security owner governing financial and supporting-document access"],"observable_state":"For the same entity, account, period, ledger balance, substantiating balance, reconciling items, evidence, and actor assignments, a workbook and a proposed workflow platform disagree about whether the reconciliation may advance to Reviewed or Certified. Existing dashboards and testing procedures infer meaning from spreadsheet locations or platform-specific status values, while no implementation-independent record specifies the reconciliation equation, permitted transitions, segregation-of-duties rules, evidence requirements, failure semantics, or effects of reopening a certified case.","consequence":"A tool migration can silently weaken or alter the reconciliation control, produce inconsistent close-status reporting, permit invalid approvals, lose the history of resolved items, or force every dashboard and audit procedure to be rewritten around the replacement’s internal representation.","affected_objective":"Preserve the accounting meaning, approval discipline, traceability, and completion criteria of an account reconciliation while allowing its workbook, workflow system, storage model, and calculation implementation to change.","intervention":"Define an opaque, versioned Account Reconciliation Case by its abstract behavior. Its state contains a declared account scope; immutable source-balance receipts; a contract-defined sign and rounding policy; uniquely identified reconciling items; evidence receipts; assigned preparer and reviewer roles; an append-only action history; and a lifecycle of Draft, Prepared, Reviewed, Certified, Reopened, and Superseded. Public operations create a case, register balance receipts, add or amend items while permitted, attach evidence, submit preparation, record an independent review decision, certify, reopen with a reason, supersede a version, and query a normalized snapshot or history. The contract states that the ledger balance must equal the substantiated balance plus the signed sum of valid reconciling items within the declared rounding rule; every unresolved item must have an owner, classification, origin period, and disposition; an actor cannot approve that actor’s own preparation; required evidence must be present before advancement; rejected operations leave state unchanged; certification freezes the version; and reopening creates a linked successor rather than rewriting certified history. Typed errors distinguish missing evidence, equation failure, unauthorized actor, invalid transition, stale version, and duplicate item identity. Operations may append access or notification events but may not post entries, change ledger balances, or dispose of reconciling items outside the case. Workbook cells, formulas, tab order, filenames, database tables, workflow IDs, vendor status codes, notification channels, and screen layouts remain non-contractual. Every implementation maps its valid representation to the abstract case and must pass the same black-box workflow oracle before being treated as a substitute. Authorized auditors may still inspect underlying formulas, configurations, and source controls; opacity governs consumer dependence, not assurance access.","structural_mapping":[{"archetype_element":"Abstract component and state model","domain_realization":"An Account Reconciliation Case defined by scope, balance receipts, reconciling items, evidence, roles, immutable history, and explicit Draft-to-Superseded states."},{"archetype_element":"Observable operation surface","domain_realization":"Case creation, balance registration, item maintenance, evidence attachment, preparation submission, review, certification, reopening, supersession, and normalized snapshot or history queries."},{"archetype_element":"Behavioral laws and invariants","domain_realization":"The reconciliation equation must hold under the declared sign and rounding policy; unresolved items require specified attributes; self-approval is forbidden; evidence gates advancement; certified versions are immutable; and reopening preserves certified history through a linked successor."},{"archetype_element":"Hidden representation","domain_realization":"Spreadsheet formulas and tabs, cell colors, filenames, database rows, workflow-engine states, vendor identifiers, screen layout, and notification implementation are excluded from the contract."},{"archetype_element":"Error semantics and side-effect limits","domain_realization":"Invalid transitions, stale versions, equation failures, duplicate items, missing evidence, and unauthorized actors return typed failures without partial state change; no operation can post or alter ledger records."},{"archetype_element":"Abstraction function and representation invariant","domain_realization":"Each workbook adapter or platform implementation maps its concrete records to exactly one abstract case and must demonstrate that valid concrete states satisfy the reconciliation equation, role, evidence, and history invariants."},{"archetype_element":"Conformance oracle and substitutability rule","domain_realization":"One implementation-parameterized suite executes identical balance, item, approval, rejection, reopen, and history scenarios; only implementations conforming to the same contract version are eligible for substitution."},{"archetype_element":"Leakage control, versioning, and stewardship","domain_realization":"Reviewers prohibit dependencies on presentation and vendor-specific statuses, probe observable leakage, version behavioral changes, and place semantic stewardship with close governance while preserving auditor independence."}],"mechanism_mapping":[{"mechanism_slug":"abstract_data_type_specification","role":"Specifies the reconciliation case as abstract values, operations, state transitions, invariants, and a mapping from each workbook or platform representation to that meaning.","counterfactual_removal":"Without the abstract model and mapping, two systems could expose similarly named statuses while representing materially different equations, approval histories, or completion states."},{"mechanism_slug":"design_by_contract_clause","role":"Defines actor obligations, operation preconditions, postconditions, and unchanged-state failure behavior for preparation, review, certification, reopening, and supersession.","counterfactual_removal":"Without per-operation clauses, implementations could handle missing evidence, self-approval, failed equations, or rejected reviews differently while claiming to implement the same workflow."},{"mechanism_slug":"opaque_type_or_module_boundary","role":"Makes normalized operations and sanctioned evidence views the consumer boundary, preventing dashboards and dependent procedures from reaching into workbook cells or vendor workflow records.","counterfactual_removal":"Without an enforced boundary, consumers could continue treating cell colors, filenames, or vendor status codes as the real contract, recreating migration coupling."},{"mechanism_slug":"black_box_contract_test_suite","role":"Runs the same observable workflow scenarios against a simple model, a workbook adapter, and any replacement platform to determine contract conformance.","counterfactual_removal":"Without a shared black-box oracle, replacement acceptance would depend on screenshots, walkthroughs, or implementation-specific checklists that cannot establish behavioral substitution."},{"mechanism_slug":"property_based_conformance_test","role":"Generates balances, signed items, roles, evidence states, and operation sequences to test equation preservation, valid transitions, segregation of duties, immutability, and successor-history linkage.","counterfactual_removal":"Without generated sequences, example tests could miss multi-step paths such as rejection followed by amendment, stale approval attempts, repeated reopening, or rounding-boundary failures."},{"mechanism_slug":"mock_fake_or_stub_implementation","role":"Provides a deliberately simple in-memory case model that expresses the contract independently of either the incumbent workbook or proposed workflow platform and can inject rare failures.","counterfactual_removal":"Without an independent model implementation, the contract and tests could be unconsciously derived from whichever concrete tool is treated as the incumbent."},{"mechanism_slug":"representation_leakage_probe","role":"Inventories observable but unpromised features such as default item ordering, display colors, generated filenames, internal status codes, timestamps, error wording, and notification sequence.","counterfactual_removal":"Without leakage probing, consumers could form new dependencies on presentation or vendor behavior even though direct access to internal storage was blocked."},{"mechanism_slug":"semantic_versioning_and_deprecation_gate","role":"Classifies changes to equations, required item attributes, transition rules, role constraints, and error behavior and requires migration before removing a promised behavior.","counterfactual_removal":"Without explicit version governance, close governance could alter control semantics in place, leaving prior conformance results and consumer interpretations silently obsolete."}],"causal_chain":["Reconciliation meaning is currently distributed across workbook structure, platform configuration, and informal operating conventions.","The intervention restates that meaning as an abstract case with explicit operations, lifecycle, accounting equation, role constraints, evidence obligations, errors, and side-effect limits.","Adapters hide concrete workbook and platform representations while exposing the same behavioral surface and sanctioned assurance views.","The abstraction mapping and representation invariants require each concrete state to denote a valid abstract reconciliation rather than merely resemble a familiar report.","The shared black-box and generated-sequence oracle detects differences in advancement eligibility, segregation of duties, equation preservation, immutability, and history behavior.","Leakage review prevents presentation details and vendor statuses from becoming replacement dependencies, while version governance makes intentional semantic changes explicit.","If the contract is sufficiently discriminating, a replacement implementation can be evaluated as the same reconciliation control without requiring consumers to adopt its storage model or user-interface conventions."],"baseline":"Retain the current reconciliation workbook or platform as the de facto specification. During migration, reproduce its fields and status labels, compare selected screenshots and reports, document differences in a project workbook, and rewrite dashboards and testing procedures where the new tool behaves differently.","nearest_rivals":["Mandate a standard reconciliation workbook template. This may reduce local variation but freezes a concrete cell-and-formula representation and does not provide a representation-independent substitution oracle.","Configure one enterprise reconciliation platform as the authoritative process. This centralizes workflow but makes vendor states and data structures load-bearing and leaves a future replacement governed by another bespoke migration.","Publish a reconciliation control narrative and operating procedure. Prose can state responsibilities but does not mechanically govern operation sequences, error behavior, immutability, or implementation acceptance.","Create a canonical reconciliation database schema. A common schema aligns stored fields but does not by itself define approval semantics, permitted transitions, equation behavior, or unchanged-state failures.","Perform a parallel run and manually compare completion reports. This tests selected cases in one migration but can overlook semantic differences hidden behind matching status labels and does not create a reusable oracle."],"remaining_contrastive_claim":"After accounting for these rivals, the testable contrast is whether an account reconciliation defined by abstract state, behavioral laws, actor-sensitive transitions, error semantics, and a reusable conformance oracle can preserve control behavior across a workbook and workflow platform without requiring a common physical template or vendor state model. This is a bounded design hypothesis, not a claim of novelty or effect.","authority_safety":{"decision_authority":"The controller or designated close-governance owner may approve the abstract accounting equation, lifecycle, and internal pilot with the financial-systems and data-security owners. Process owners retain authority over assignments and certification. External auditors independently determine whether the control and its evidence are suitable for audit reliance; conformance cannot compel that determination.","authorized_first_step":"Build an offline in-memory model and a read-only adapter for one access-approved, already-closed reconciliation. Replay predeclared synthetic and historical scenarios through both implementations without changing the certified record, ledger, production workflow, or active close status.","excluded_actions":["Posting, approving, reversing, or modifying ledger entries","Changing a certified reconciliation or its retained evidence","Deploying the interface as a production certification path","Representing a passing conformance suite as control certification or audit approval","Weakening role separation, evidence requirements, or equation rules to obtain a passing result","Exposing financial records, credentials, or supporting documents beyond existing authorization","Using the abstraction boundary to prevent authorized inspection of workbook formulas, platform configuration, or source controls"],"halt_rollback":"Stop the pilot on unauthorized data access, a segregation-of-duties violation, an unexplained balance or state mismatch, loss of certified history, unresolved evidence mapping, or a required control observation that cannot be expressed through the contract. Preserve discrepancy records, revoke prototype access, remove pilot copies according to retention policy, and leave the incumbent reconciliation and close process unchanged."},"negative_tests":{"strongest_counterevidence":"The strongest counterevidence would be that the control’s evidentiary meaning necessarily resides in representation-specific artifacts—such as reviewed formulas, protected cell ranges, platform configuration, or signature mechanics—and that no stable behavioral observation can preserve that meaning across implementations without recreating those internals in the contract.","problem_falsifier":"The problem is falsified if a dependency inventory and controlled tool swap show that completion, review, certification, reopening, dashboards, and audit testing already rely exclusively on documented representation-independent semantics and require neither tool-specific mappings nor interpretive decisions.","intervention_falsifier":"The intervention is falsified if independently built implementations pass the predeclared suite for the same contract version but disagree about whether a case is reconciled, who may approve it, which evidence is required, how an item ages, or whether certified history changed; it is also falsified if closing those gaps necessarily fixes one workbook or vendor representation as the public contract.","risks":["An incorrect abstract equation or rounding rule could formalize the wrong accounting treatment.","A weak state model could omit a control-relevant distinction, while an over-specified model could freeze local operating choices.","The simple model and concrete adapters could share assumptions and agree on the same defect.","Opacity could obstruct legitimate assurance work if sanctioned inspection paths are incomplete.","Role identifiers and evidence receipts could reveal sensitive personnel or financial information.","Consumers could depend on unpromised ordering, timestamps, display labels, filenames, or notification behavior.","Generated scenarios may not reach rare combinations of currencies, aging rules, or reopened periods.","Contract stewardship could add process overhead without resolving disagreements over control ownership.","A conforming interface could mask weak source-data or access controls that remain outside its boundary."]},"next_evidence_step":"Predeclare a bounded replay matrix for one already-closed account reconciliation: balanced with no items, balanced through multiple signed items, rounding-boundary difference, missing evidence, duplicate item identity, preparer self-approval attempt, rejected review followed by amendment, stale-version approval, certification mutation attempt, and reopen-to-successor history. Implement the contract as an in-memory model and a read-only adapter over the retained incumbent artifact. Run the identical black-box and generated-sequence checks, then have one close-control owner and one audit-methodology reviewer classify every observable field or behavior as contractual, sanctioned inspection, or representation leakage. Stop after this single-case evaluation; passing would authorize no production change.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Proposal 1 addressed the completeness and substitutability of a read-only journal-entry population supplied to audit consumers. Its abstract object was a sealed data population, and its causal path ran through scope membership, exact-once extraction, control-total reconciliation, lineage retrieval, and interchangeable data providers. This proposal addresses a materially different problem: preserving the behavior of an account-reconciliation control across workflow representations. Its abstract object is an actor-sensitive case with preparation, review, certification, rejection, reopening, and supersession transitions; its central invariants concern a reconciliation equation, evidence gates, segregation of duties, and immutable approval history. It neither extends the journal-population interface nor requires its adoption and can be implemented while existing journal extraction remains unchanged. Conversely, Proposal 1 can be adopted without changing reconciliation workflows. The two opportunities therefore have different actors, decisions, failure modes, interventions, acceptance scenarios, and causal paths.","revision_record":{"parent_version":null,"progress_targets_addressed":["Materially distinct problem from the sealed journal-population proposal","Independent representation-free component and causal path","Explicit actors, observable state, consequences, and affected objective","Complete operation surface, lifecycle, invariants, errors, and side-effect limits","Mechanism-specific roles and counterfactual removals","Baseline, rivals, authority boundaries, safeguards, and falsifiers","Bounded offline first evidence step","Explicit comparison with every earlier sealed proposal"],"conceptual_changes":["Initial version defines reconciliation-control equivalence independently of workbook and workflow-platform representations.","Centers actor-sensitive transitions, reconciliation laws, evidence gates, and immutable approval history rather than population extraction."],"operational_changes":["Initial version restricts evidence gathering to an offline replay of one already-closed reconciliation.","Adds a simple independent model, read-only incumbent adapter, predeclared scenario matrix, and explicit halt conditions."],"evidence_changes":["Prior art remains unsearched.","Evidence is limited to synthetic scenarios and one authorized historical reconciliation."],"claim_changes":["Makes no claim of novelty, prevalence, demand, or effect size.","Limits the contrastive claim to whether the behavioral contract discriminates substitutable reconciliation implementations without a shared physical template or vendor state model."]}}