diff --git a/.changeset/27146-record-page-inline-edit-field-access.md b/.changeset/27146-record-page-inline-edit-field-access.md
new file mode 100644
index 00000000000..819607a25d5
--- /dev/null
+++ b/.changeset/27146-record-page-inline-edit-field-access.md
@@ -0,0 +1,8 @@
+---
+'@object-ui/plugin-detail': patch
+---
+
+Clause-②: no
+Metadata-protocol: none
+
+fix(plugin-detail): the record page's in-place edit reads the stored row's field locks. `record:details` and `record:highlights` now ask the server's record-scoped field projection (`DataSource.getRecordFieldAccess`, `GET /data/{object}/{id}/field-access`) when the page's inline-edit session may edit, so a field permission whose `when` locks a field only from some state onward disables it only on the rows it names, as the record form's edit dialog already does. The answer is asked again after a write to the record. A data source without the method keeps the row-blind `/auth/me/permissions` answer, and a list view's column-wide inline edit keeps it too.
diff --git a/content/docs/permissions/field-level-security.mdx b/content/docs/permissions/field-level-security.mdx
index e6eb2fb21ba..46d3b6210cc 100644
--- a/content/docs/permissions/field-level-security.mdx
+++ b/content/docs/permissions/field-level-security.mdx
@@ -63,7 +63,9 @@ fields: {
   **that** record, and its `editable` list is the write gate's own verdict on
   an update of the stored row. So a lock that applies from a stage onward
   disables the field only on the rows its condition names — this is the
-  answer a record's edit form reads. A row that is absent or that the caller
+  answer a record's edit form and the record page's in-place edit read. A
+  list view's inline edit locks a whole column, which cannot split per row,
+  so it keeps the row-blind answer. A row that is absent or that the caller
   cannot read answers the record read's `404`. The answer is field-level
   only: the object grant and the record's row-level write scope (sharing,
   row-level security, ownership) are not part of it, so on a row the caller
diff --git a/ui/packages/plugin-detail/src/recordFieldAccess.tsx b/ui/packages/plugin-detail/src/recordFieldAccess.tsx
new file mode 100644
index 00000000000..2cbc16ec79d
--- /dev/null
+++ b/ui/packages/plugin-detail/src/recordFieldAccess.tsx
@@ -0,0 +1,99 @@
+/**
+ * ObjectUI
+ * Copyright (c) 2024-present ObjectStack Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * The record a detail body edits in place answers its own field locks
+ * (objectstack#27146, the residual of objectstack#26594 ruling B).
+ *
+ * `DetailSection` and `HeaderHighlight` ask a field's in-place edit of the
+ * `recordEdit` row (`resolveFieldAffordance`), which reads `usePermissions()`.
+ * Under the page's provider alone that is `/auth/me/permissions`' answer, which
+ * holds no row: a field permission whose `when` names only some rows is served
+ * there as its lock, and the field was disabled on every row, the draft the
+ * server lets the caller write included. Below `RecordFieldAccessScope`
+ * (`@object-ui/permissions`) the same call answers from the server's
+ * projection for THIS stored row (`DataSource.getRecordFieldAccess`, the
+ * `GET /data/{object}/{id}/field-access` route) — the one source the record
+ * form's edit dialog asks. Nothing here evaluates a `when`.
+ *
+ * Mounted by the two record blocks that edit the page's record in place,
+ * `record:details` and `record:highlights`, around their bodies only. They are
+ * sibling blocks of the page schema with no ancestor in this package, and a
+ * mount above them (the page host) would also cover the page's action dialogs
+ * and related lists, where a form editing ANOTHER row of the same object would
+ * read this row's answer until its own arrives. So each block asks for itself:
+ * a page drawing both asks twice.
+ *
+ * It asks only when the block's in-place edit is on: the page's inline-edit
+ * session may edit (`canEdit`), the block offers it (`enabled`), the record is
+ * stored (an id) and the data source carries the method. Otherwise the
+ * row-blind answer stands, as it does for a non-ObjectStack backend.
+ *
+ * The answer belongs to the stored row, so it is asked again whenever the row
+ * may have moved: a write the data source reports for this record (the inline
+ * save bar's included) and a change on the data-invalidation bus for it (the
+ * signal the page re-reads its record on). These are the triggers
+ * `RecordFieldAccessForForm` (`@object-ui/plugin-form`) holds; that wrapper is
+ * not exported and this package does not depend on that one, so the few lines
+ * are repeated here rather than published as a new entry of either package.
+ */
+
+import React, { useEffect, useState } from 'react';
+import { RecordFieldAccessScope } from '@object-ui/permissions';
+import { useDataInvalidation, useInlineEdit } from '@object-ui/react';
+import type { DataSource } from '@object-ui/types';
+
+export interface RecordFieldAccessForRecordProps {
+  objectName?: string | null;
+  recordId?: string | number | null;
+  dataSource?: DataSource | null;
+  /** Whether the block draws in-place editors at all. Defaults to `true`. */
+  enabled?: boolean;
+  children: React.ReactNode;
+}
+
+export function RecordFieldAccessForRecord({
+  objectName,
+  recordId,
+  dataSource,
+  enabled = true,
+  children,
+}: RecordFieldAccessForRecordProps) {
+  const inline = useInlineEdit();
+  const load = dataSource?.getRecordFieldAccess;
+  const asks = enabled
+    && !!inline?.canEdit
+    && !!objectName
+    && recordId !== undefined && recordId !== null && recordId !== ''
+    && typeof load === 'function';
+  const id = asks ? String(recordId) : undefined;
+  const busRevision = useDataInvalidation(asks ? (objectName as string) : undefined, id);
+  const [writeRevision, setWriteRevision] = useState(0);
+  useEffect(() => {
+    if (!asks || typeof dataSource?.onMutation !== 'function') return;
+    const object = (objectName as string).toLowerCase();
+    return dataSource.onMutation((event) => {
+      if ((event?.resource ?? '').toLowerCase() !== object) return;
+      if (event.id != null && String(event.id) !== id) return;
+      setWriteRevision((n) => n + 1);
+    });
+  }, [asks, dataSource, objectName, id]);
+  if (!asks) {
+    return <>{children}</>;
+  }
+  return (
+    <RecordFieldAccessScope
+      object={objectName as string}
+      recordId={id as string}
+      load={(object, recordKey) => (load as NonNullable<typeof load>).call(dataSource, object, recordKey)}
+      revision={busRevision + writeRevision}
+    >
+      {children}
+    </RecordFieldAccessScope>
+  );
+}
diff --git a/ui/packages/plugin-detail/src/renderers/__tests__/record-blocks.recordFieldAccess-27146.test.tsx b/ui/packages/plugin-detail/src/renderers/__tests__/record-blocks.recordFieldAccess-27146.test.tsx
new file mode 100644
index 00000000000..127b835b000
--- /dev/null
+++ b/ui/packages/plugin-detail/src/renderers/__tests__/record-blocks.recordFieldAccess-27146.test.tsx
@@ -0,0 +1,209 @@
+/**
+ * ObjectUI
+ * Copyright (c) 2024-present ObjectStack Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/**
+ * objectstack#27146 (the residual of objectstack#26594, ruling B) — the record
+ * page's in-place edit asks the server for THIS record's field projection, the
+ * answer the record form's edit dialog already reads.
+ *
+ * The persona is the contract app's finance role: `summary` is locked from
+ * `approved` onward (`FieldPermissionSchema.when`). `/auth/me/permissions`
+ * holds no row, so it serves that entry as its lock, and before this card the
+ * details body and the highlights strip disabled `summary` on the draft the
+ * server lets the caller save. `ref_no` is locked on every row: the control
+ * that a lock the server keeps stays locked.
+ *
+ * Rows, for `record:details` and for `record:highlights`, each under the record
+ * page's providers (record context, inline-edit session):
+ *   - a draft the server unlocks → `summary` edits in place, `ref_no` stays a
+ *     read display;
+ *   - an approved row → both stay read displays;
+ *   - a save after which the server judges the row approved → asked again,
+ *     and `summary` locks (the answer follows the stored row, not the mount);
+ * and the controls:
+ *   - a data source without the method keeps the row-blind lock;
+ *   - a session that may not edit asks nothing.
+ */
+import * as React from 'react';
+import { describe, it, expect, vi, beforeAll, beforeEach, afterEach } from 'vitest';
+import { render, screen, waitFor, act, cleanup, fireEvent } from '@testing-library/react';
+import '@testing-library/jest-dom';
+import { HighlightFieldsProvider, InlineEditProvider, RecordContextProvider, useInlineEdit } from '@object-ui/react';
+import { MePermissionsProvider, type MePermissionsResponse } from '@object-ui/permissions';
+import { RecordDetailsRenderer } from '../record-details';
+import { RecordHighlightsRenderer } from '../record-highlights';
+
+const OBJECT = 'rfa_contract';
+const FIELDS = ['region', 'summary', 'ref_no'];
+
+const OBJECT_SCHEMA = {
+  name: OBJECT,
+  label: 'Contract',
+  // The title field the details body draws in the header, not as a row.
+  nameField: 'name',
+  highlightFields: FIELDS,
+  fields: {
+    name: { type: 'text', label: 'Name' },
+    region: { type: 'text', label: 'Region' },
+    summary: { type: 'text', label: 'Summary' },
+    ref_no: { type: 'text', label: 'Reference number' },
+  },
+};
+
+const PRINCIPAL: MePermissionsResponse = {
+  authenticated: true,
+  userId: 'u-1',
+  tenantId: null,
+  roles: ['finance'],
+  permissionSets: ['rfa_fixture_member'],
+  objects: { [OBJECT]: { allowCreate: true, allowRead: true, allowEdit: true, allowDelete: false } },
+  // As `/auth/me/permissions` serves them: the conditioned entry as its lock.
+  fields: {
+    [`${OBJECT}.summary`]: { readable: true, editable: false },
+    [`${OBJECT}.ref_no`]: { readable: true, editable: false },
+  },
+} as MePermissionsResponse;
+
+const RECORD = { id: 'c1', name: 'MSA', region: 'EMEA', summary: 'Draft terms', ref_no: 'R-1' };
+
+const ACCESS = {
+  draft: { object: OBJECT, recordId: 'c1', readable: ['id', ...FIELDS], editable: ['region', 'summary'] },
+  approved: { object: OBJECT, recordId: 'c1', readable: ['id', ...FIELDS], editable: ['region'] },
+};
+
+function makeDS(access: (typeof ACCESS)[keyof typeof ACCESS], withMethod = true) {
+  const listeners = new Set<(e: any) => void>();
+  return {
+    getObjectSchema: vi.fn(async () => OBJECT_SCHEMA),
+    findOne: vi.fn(async () => ({ ...RECORD })),
+    find: vi.fn(async () => ({ data: [] })),
+    update: vi.fn(async (resource: string, id: string, data: any) => {
+      const record = { ...RECORD, ...data };
+      // As the adapter does: every successful write is reported to `onMutation` subscribers.
+      for (const listener of listeners) listener({ type: 'update', resource, id, record });
+      return record;
+    }),
+    onMutation: (listener: (e: any) => void) => {
+      listeners.add(listener);
+      return () => listeners.delete(listener);
+    },
+    ...(withMethod ? { getRecordFieldAccess: vi.fn(async () => access) } : {}),
+  };
+}
+
+/** Opens the page's inline-edit session, as the pencil does. */
+function EnterEdit() {
+  const inline = useInlineEdit();
+  return <button type="button" onClick={() => inline?.enter()}>enter-edit</button>;
+}
+
+const BLOCKS = [
+  { block: 'record:details', mount: () => <RecordDetailsRenderer schema={{} as never} /> },
+  { block: 'record:highlights', mount: () => <RecordHighlightsRenderer schema={{ fields: FIELDS } as never} /> },
+];
+
+function renderPage(ds: ReturnType<typeof makeDS>, block: React.ReactNode, canEdit = true) {
+  return render(
+    <MePermissionsProvider initialPermissions={PRINCIPAL}>
+      <RecordContextProvider
+        objectName={OBJECT}
+        recordId={RECORD.id}
+        data={RECORD}
+        objectSchema={OBJECT_SCHEMA}
+        dataSource={ds as never}
+      >
+        <HighlightFieldsProvider>
+          <InlineEditProvider canEdit={canEdit}>
+            <EnterEdit />
+            {block}
+          </InlineEditProvider>
+        </HighlightFieldsProvider>
+      </RecordContextProvider>
+    </MePermissionsProvider>,
+  );
+}
+
+/** With the session open: which fields draw an input (edit in place) rather than their read display. */
+function editable(): Record<string, boolean> {
+  return {
+    region: screen.queryByDisplayValue(RECORD.region) !== null,
+    summary: screen.queryByDisplayValue(RECORD.summary) !== null,
+    ref_no: screen.queryByDisplayValue(RECORD.ref_no) !== null,
+  };
+}
+
+async function openSession() {
+  await screen.findByText(RECORD.summary);
+  fireEvent.click(screen.getByText('enter-edit'));
+  await waitFor(() => expect(screen.getByDisplayValue(RECORD.region)).toBeInTheDocument());
+}
+
+beforeAll(() => Object.defineProperty(window, 'innerWidth', { configurable: true, value: 1280 }));
+
+beforeEach(() => {
+  // `useRecordEditable` probes `POST /api/v1/security/explain`; serve it from a
+  // double so no real socket opens. Its answer is orthogonal to the field locks.
+  vi.stubGlobal('fetch', vi.fn(async () => ({
+    ok: true,
+    status: 200,
+    json: async () => ({ allowed: true }),
+    text: async () => '{"allowed":true}',
+  })) as never);
+});
+
+afterEach(() => {
+  cleanup();
+  vi.unstubAllGlobals();
+});
+
+describe.each(BLOCKS)('[#27146] $block', ({ mount }) => {
+  it('on a draft the server unlocks, the conditioned field edits in place and the unconditioned lock holds', async () => {
+    const ds = makeDS(ACCESS.draft);
+    renderPage(ds, mount());
+    await openSession();
+    await waitFor(() => expect(editable()).toEqual({ region: true, summary: true, ref_no: false }));
+    expect(ds.getRecordFieldAccess).toHaveBeenCalledWith(OBJECT, 'c1');
+  });
+
+  it('on a row the condition names, the field stays locked', async () => {
+    const ds = makeDS(ACCESS.approved);
+    renderPage(ds, mount());
+    await openSession();
+    await waitFor(() => expect(ds.getRecordFieldAccess).toHaveBeenCalled());
+    await act(async () => { await new Promise((r) => setTimeout(r, 0)); });
+    expect(editable()).toEqual({ region: true, summary: false, ref_no: false });
+  });
+
+  it('a save that moves the row into the state the condition names locks the field again', async () => {
+    const ds = makeDS(ACCESS.draft);
+    renderPage(ds, mount());
+    await openSession();
+    await waitFor(() => expect(editable().summary).toBe(true));
+    // The server now judges the stored row approved: the next answer locks `summary`.
+    ds.getRecordFieldAccess!.mockResolvedValue(ACCESS.approved);
+    await act(async () => { await ds.update(OBJECT, 'c1', { region: 'APAC' }); });
+    await waitFor(() => expect(ds.getRecordFieldAccess).toHaveBeenCalledTimes(2));
+    await waitFor(() => expect(editable().summary).toBe(false));
+    expect(editable().ref_no).toBe(false);
+  });
+
+  it('a data source without the method keeps the row-blind lock', async () => {
+    const ds = makeDS(ACCESS.draft, false);
+    renderPage(ds, mount());
+    await openSession();
+    expect(editable()).toEqual({ region: true, summary: false, ref_no: false });
+  });
+
+  it('a session that may not edit asks nothing', async () => {
+    const ds = makeDS(ACCESS.draft);
+    renderPage(ds, mount(), false);
+    await screen.findByText(RECORD.summary);
+    await act(async () => { await new Promise((r) => setTimeout(r, 0)); });
+    expect(ds.getRecordFieldAccess).not.toHaveBeenCalled();
+  });
+});
diff --git a/ui/packages/plugin-detail/src/renderers/record-details.tsx b/ui/packages/plugin-detail/src/renderers/record-details.tsx
index 3dd0370806e..36313de479e 100644
--- a/ui/packages/plugin-detail/src/renderers/record-details.tsx
+++ b/ui/packages/plugin-detail/src/renderers/record-details.tsx
@@ -35,6 +35,7 @@ import {
 import { DetailView } from '../DetailView';
 import { hasCellValue } from '../emptiness';
 import { RecordPageProvenanceContext } from '../recordPageProvenance';
+import { RecordFieldAccessForRecord } from '../recordFieldAccess';
 import { deriveFieldGroupDetailEntries, type FieldGroupDetailEntry } from '../synth/buildDefaultPageSchema';
 import { useRecordAriaProps } from './recordComponentAria';
 import { recordBindingBlock } from './recordBinding';
@@ -1187,15 +1188,24 @@ const RecordDetailsBody: React.FC<RecordDetailsRendererProps> = ({
   return (
     <div className={className} {...designer} {...ariaProps}>
       <RecordPageProvenanceContext.Provider value={readsPageRecord}>
-        {/* objectui#12701 — the record is the context host's (the record
-            page's read, or the binding's row above); this body never reads it
-            again, it waits for `ctx.data`. */}
-        <DetailView
-          schema={synthesized}
+        {/* objectstack#27146 — the in-place edit's field locks are this
+            stored row's, asked of the server (`../recordFieldAccess`). */}
+        <RecordFieldAccessForRecord
+          objectName={ctx.objectName}
+          recordId={ctx.recordId}
           dataSource={ctx.dataSource}
-          inlineEdit={inlineEditDefault}
-          recordFromHost
-        />
+          enabled={inlineEditDefault}
+        >
+          {/* objectui#12701 — the record is the context host's (the record
+              page's read, or the binding's row above); this body never reads it
+              again, it waits for `ctx.data`. */}
+          <DetailView
+            schema={synthesized}
+            dataSource={ctx.dataSource}
+            inlineEdit={inlineEditDefault}
+            recordFromHost
+          />
+        </RecordFieldAccessForRecord>
       </RecordPageProvenanceContext.Provider>
     </div>
   );
diff --git a/ui/packages/plugin-detail/src/renderers/record-highlights.tsx b/ui/packages/plugin-detail/src/renderers/record-highlights.tsx
index 7bda49ecfd0..09011510506 100644
--- a/ui/packages/plugin-detail/src/renderers/record-highlights.tsx
+++ b/ui/packages/plugin-detail/src/renderers/record-highlights.tsx
@@ -15,6 +15,7 @@ import { useRecordContext, useRegisterHighlightFields } from '@object-ui/react';
 import { useFieldPermissions, usePermissions } from '@object-ui/permissions';
 import type { RecordHighlightsComponentProps } from '@object-ui/types';
 import { HeaderHighlight } from '../HeaderHighlight';
+import { RecordFieldAccessForRecord } from '../recordFieldAccess';
 import { useRecordAriaProps } from './recordComponentAria';
 import { recordBindingBlock } from './recordBinding';
 
@@ -180,13 +181,17 @@ const RecordHighlightsBody: React.FC<RecordHighlightsRendererProps> = ({
 
   return (
     <div className={className} {...designer} {...ariaProps}>
-      <HeaderHighlight
-        fields={highlightFields as any}
-        data={ctx?.data}
-        objectName={ctx?.objectName}
-        objectSchema={ctx?.objectSchema as any}
-        dataSource={ctx?.dataSource}
-      />
+      {/* objectstack#27146 — the in-place edit's field locks are this
+          stored row's, asked of the server (`../recordFieldAccess`). */}
+      <RecordFieldAccessForRecord objectName={ctx?.objectName} recordId={ctx?.recordId} dataSource={ctx?.dataSource}>
+        <HeaderHighlight
+          fields={highlightFields as any}
+          data={ctx?.data}
+          objectName={ctx?.objectName}
+          objectSchema={ctx?.objectSchema as any}
+          dataSource={ctx?.dataSource}
+        />
+      </RecordFieldAccessForRecord>
     </div>
   );
 };