---
id: FAS-ACC-BAT-04
feature: FEAT-ACC-BAT-04
product_area: accounting
module: batches
revision: 1
status: proposed
product_intent: proposed
source_sha:
  services-accounting: f47cb263875bbc0c5640fba7dae6785ec32695f8
  react-console: baf6dae382d6f41dce976c7f848667ccc37e076f
  rhythm-v2-docs: 37405d50d1465ea0571a66095d98ebec4db04175
capabilities:
  - CAP-ACC-BAT-017
  - CAP-ACC-BAT-018
scenarios:
  - id: FAS-ACC-BAT-04-01
    title: Entry detail agrees with protected stored lines
    kind: behaviour
    exercises:
      - CAP-ACC-BAT-017
      - CAP-ACC-BAT-018
    relies_on:
      - ATS-ACC-BAT-017-01
      - ATS-ACC-BAT-018-03
    preconditions: An isolated unit has one posted taxed invoice entry.
    steps:
      - do: >-
          Read entry detail and list results, total stored debits and credits
          and compare the ordered lines.
        expect: >-
          The views expose the same balanced entry and readable source-document
          context.
        provenance: proposed
        source: >-
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-01;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-03
    expected: >-
      The views expose the same balanced entry and readable source-document
      context.
    negative: false
    data_needs: >-
      An isolated workspace, business unit and owned fixtures matching the
      stated accounting setup.
    bound_to: []
    provenance: proposed
    source: >-
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-01;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-03
  - id: FAS-ACC-BAT-04-02
    title: Rejected ledger mutations preserve the read view
    kind: interaction
    exercises:
      - CAP-ACC-BAT-017
      - CAP-ACC-BAT-018
    relies_on:
      - ATS-ACC-BAT-017-03
      - ATS-ACC-BAT-018-03
    preconditions: A current invoice entry is visible to its workspace reader.
    steps:
      - do: 'Read it, try an ordinary update and delete, then read it again.'
        expect: >-
          The mutations fail and the second read preserves the original entry
          and lines.
        provenance: proposed
        source: >-
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-03;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-03
    expected: >-
      The mutations fail and the second read preserves the original entry and
      lines.
    negative: true
    data_needs: >-
      An isolated workspace, business unit and owned fixtures matching the
      stated accounting setup.
    bound_to: []
    provenance: proposed
    source: >-
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-03;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-03
  - id: FAS-ACC-BAT-04-03
    title: Ordinary and fiscal recovery have different read histories
    kind: lifecycle
    exercises:
      - CAP-ACC-BAT-016
      - CAP-ACC-BAT-017
      - CAP-ACC-BAT-018
      - CAP-ACC-BAT-020
    relies_on:
      - ATS-ACC-BAT-016-02
      - ATS-ACC-BAT-018-04
      - ATS-ACC-BAT-020-05
    preconditions: >-
      One ordinary posting and one fiscal system posting exist in periods
      eligible for their respective recovery.
    steps:
      - do: >-
          Unpost the ordinary collection, reverse the system posting and read
          current and historical entries for both.
        expect: >-
          Ordinary entry history is empty; fiscal history retains original and
          mirrored entries when requested.
        provenance: proposed
        source: >-
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-016-take-a-posting-back-and-post-again.md#ATS-ACC-BAT-016-02;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-04;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-020-post-and-reverse-the-period-s-system-batches-for-the-fiscal.md#ATS-ACC-BAT-020-05
    expected: >-
      Ordinary entry history is empty; fiscal history retains original and
      mirrored entries when requested.
    negative: false
    data_needs: >-
      An isolated workspace, business unit and owned fixtures matching the
      stated accounting setup.
    bound_to: []
    provenance: proposed
    source: >-
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-016-take-a-posting-back-and-post-again.md#ATS-ACC-BAT-016-02;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-04;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-020-post-and-reverse-the-period-s-system-batches-for-the-fiscal.md#ATS-ACC-BAT-020-05
  - id: FAS-ACC-BAT-04-04
    title: Entry reading and dataset querying enforce their boundaries
    kind: permission
    exercises:
      - CAP-ACC-BAT-017
      - CAP-ACC-BAT-018
    relies_on:
      - ATS-ACC-BAT-017-06
      - ATS-ACC-BAT-018-01
      - ATS-ACC-BAT-018-05
      - ATS-ACC-BAT-018-06
    preconditions: >-
      Two workspaces have distinct posted entries and callers with entry-read
      and dataset-query grants.
    steps:
      - do: >-
          Read and query as each authorized caller; repeat with missing grants
          and foreign references.
        expect: >-
          Each caller sees only its workspace; missing grants are refused and
          foreign entry detail is indistinguishable from absence.
        provenance: proposed
        source: >-
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-06;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-01;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-05;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-06
    expected: >-
      Each caller sees only its workspace; missing grants are refused and
      foreign entry detail is indistinguishable from absence.
    negative: true
    data_needs: >-
      An isolated workspace, business unit and owned fixtures matching the
      stated accounting setup.
    bound_to: []
    provenance: proposed
    source: >-
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-06;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-01;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-05;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-06
  - id: FAS-ACC-BAT-04-05
    title: Invalid entry writes cannot become report rows
    kind: regression
    exercises:
      - CAP-ACC-BAT-017
      - CAP-ACC-BAT-018
    relies_on:
      - ATS-ACC-BAT-017-01
      - ATS-ACC-BAT-017-04
      - ATS-ACC-BAT-018-03
    preconditions: An isolated unit has a current posting and a different unit’s account.
    steps:
      - do: >-
          Try committing an unbalanced entry and an entry using the foreign
          account, then inspect detail and reporting rows.
        expect: >-
          Both writes fail and neither attempted entry appears in the read or
          reporting results.
        provenance: proposed
        source: >-
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-01;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-04;
          rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-03
    expected: >-
      Both writes fail and neither attempted entry appears in the read or
      reporting results.
    negative: true
    data_needs: >-
      An isolated workspace, business unit and owned fixtures matching the
      stated accounting setup.
    bound_to: []
    provenance: proposed
    source: >-
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-01;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-017-keep-the-subledger-balanced-and-unchangeable.md#ATS-ACC-BAT-017-04;
      rhythm-v2-docs:specs/accounting/batches/design/tests/ATS-ACC-BAT-018-read-the-subledger-by-batch-document-account-and-date.md#ATS-ACC-BAT-018-03
evidence:
  - source: CAP-ACC-BAT-017
    provenance: documented
    note: >-
      Feature-level scenarios compose the capability outcomes; no complete
      executable binding is inferred from isolated assertions.
  - source: CAP-ACC-BAT-018
    provenance: documented
    note: >-
      Feature-level scenarios compose the capability outcomes; no complete
      executable binding is inferred from isolated assertions.
---

# Ledger protection and reading: Feature Acceptance Suite

## What the Feature Must Do as a Whole

Ledger integrity and reading form one trustworthy inspection boundary. The suite verifies what a reader can inspect after successful writes, refused writes and controlled recovery.

## Interactions Between Capabilities

Storage protection and reporting are checked together. Ordinary recovery and fiscal reopening provide different histories, so both are included in the read-view verification.

## Regression Record

| Revision | Change | Scenario | Why |
|---|---|---|---|
| 1 | initial | all | Establish cumulative feature acceptance from the pinned planning and design outcomes. |