@@ -0,0 +1,10 @@
+---
+'@objectstack/objectql': patch
+---
+
+fix(objectql): the record-currency backfill cleans a driver's raw text out of a failed row, as the import door does
+
+Clause-②: no
+Metadata-protocol: none
+
+A failed row in the record-currency backfill report (`failures[].error`) now reads the import row's cleaned sentence (`sanitizeRowError` from `@objectstack/core`, the one rule both doors call) when the row's write threw anything other than a sandboxed hook's error. A driver's SQL statement, constraint name or column list no longer reaches the report, which a tenant admin reads over `POST /api/v1/meta/_migrate-record-currency-codes` and the operator reads in `os migrate record-currency-codes`. A message with no driver text reads as before. The operator's warning line keeps the whole text, so nothing is lost for diagnosis.
@@ -13,6 +13,7 @@
 // guard and the code field's `valueDomain` judge each one.
 
 import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { sanitizeRowError } from '@objectstack/core';
 import { ObjectQL } from './engine.js';
 import {
   backfillRecordCurrencyCodes,
@@ -484,8 +485,28 @@ describe('a failed row reads a sandboxed hook as the write doors do', () => {
     }
   });
 
-  it('CONTROL: any other throw keeps its message, as before', async () => {
+  it('CONTROL: a throw with no driver text keeps its message, as before', async () => {
     const { report } = await run(() => new Error('driver refused this row'));
     expect(report.failures).toEqual([{ recordId: 'r1', error: 'driver refused this row' }]);
   });
+
+  /**
+   * [#30816] A driver's own throw carries its SQL, constraint and column names.
+   * The row reads the import row's cleaned sentence (`sanitizeRowError`, the
+   * one rule both doors call), the CLI's printed report reads the same, and
+   * the operator's log line keeps the whole text.
+   */
+  it('a driver-shaped throw: the import row\'s cleaned sentence, the raw text only in the log', async () => {
+    for (const raw of [
+      `update "deal" set "currency_code" = $1 where "id" = $2 - value too long for type character varying(3)`,
+      'SQLITE_CONSTRAINT: UNIQUE constraint failed: deal.currency_code',
+      `insert into "deal" ("id") values ($1) - insert or update on table "deal" violates foreign key constraint "deal_owner_fkey"`,
+    ]) {
+      const { report, warned } = await run(() => new Error(raw));
+      expect(report.failures, raw).toEqual([{ recordId: 'r1', error: sanitizeRowError(raw) }]);
+      expect(report.failures[0]!.error, raw).not.toMatch(/"deal"|\$1|currency_code|_fkey/);
+      expect(formatRecordCurrencyBackfillReport(report).join('\n'), raw).toContain(`  • r1: ${sanitizeRowError(raw)}`);
+      expect(warned.join('\n'), raw).toContain(raw);
+    }
+  });
 });
@@ -87,7 +87,7 @@
  */
 
 import { isSandboxOrigin, isSandboxOwnFault, keysetWalk, mapDataError, sandboxBusinessMessage, type KeysetPageQuery } from '@objectstack/types';
-import { objectNotFoundError, withTransientRetry, type RetryOptions } from '@objectstack/core';
+import { objectNotFoundError, sanitizeRowError, withTransientRetry, type RetryOptions } from '@objectstack/core';
 import { isValueDomainMember } from '@objectstack/spec/shared';
 
 import { isRecordCurrencyBlank, recordCurrencyFieldOf } from './validation/record-currency-code.js';
@@ -449,15 +449,18 @@ async function walkCodelessRows(
  * error the `/data` door answers with a 5xx (a crash, a declared 5xx, the
  * sandbox's own fault) takes that door's withheld sentence, and a sandboxed
  * refusal takes the hook's own sentence, never the `hook '<name>' threw:`
- * debug wrapper. Any other throw keeps its message, as before. The operator's
- * log line above keeps the whole text.
+ * debug wrapper. [#30816] Any other throw is cleaned by the import row's own
+ * sanitizer (`sanitizeRowError`, `@objectstack/core`), so a driver's raw text
+ * (SQL, constraint names, column lists) never reaches the report; a message
+ * with no driver text reads as before. The operator's log line above keeps
+ * the whole text.
  */
 function rowFailureSentence(err: unknown, object: string, message: string): string {
   if (isSandboxOrigin(err) || isSandboxOwnFault(err)) {
     const door = mapDataError(err, object);
     if (door.status >= 500) return String(door.body.error);
   }
-  return sandboxBusinessMessage(err) ?? message;
+  return sandboxBusinessMessage(err) ?? sanitizeRowError(message);
 }
 
 /** Human-readable report body, shared by the CLI's dry-run and apply output. */
 
@@ -11,6 +11,7 @@
  */
 
 import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { sanitizeRowError } from '@objectstack/core';
 import { ObjectQL } from '@objectstack/objectql';
 import { RestServer } from './rest-server.js';
 
@@ -231,6 +232,27 @@ describe('POST /meta/_migrate-record-currency-codes — the caller\'s organizati
         expect(again.body).toMatchObject({ codeless: 0, written: 0 });
     });
 
+    /**
+     * [#30816] A driver's own throw on one row reaches the tenant admin as the
+     * import row's cleaned sentence (`sanitizeRowError`), never the driver's
+     * SQL, constraint or column names; the other rows are still written.
+     */
+    it('a driver-shaped failure on one row answers the cleaned sentence, not the driver\'s text', async () => {
+        const raw = 'update "deal" set "currency_code" = $1 where "id" = $2 - '
+            + 'value too long for type character varying(3)';
+        vi.mocked(d.driver.update).mockImplementation(async (object: string, id: string, data: Record<string, unknown>) => {
+            if (id === 'a2') throw new Error(raw);
+            const row = { ...d.storeFor(object).get(id), ...data, id };
+            d.storeFor(object).set(id, row);
+            return row;
+        });
+        const answer = await boot(engine, ADMIN_A).call({ object: 'deal', field: 'amount', code: 'USD', apply: true });
+        expect(answer.status).toBe(200);
+        expect(answer.body).toMatchObject({ codeless: 2, written: 1, failures: [{ recordId: 'a2', error: sanitizeRowError(raw) }] });
+        expect(answer.body.failures[0].error).not.toMatch(/update|"deal"|"currency_code"|\$1/);
+        expect(deal('a1')?.currency_code).toBe('USD');
+    });
+
     it('`isSystem` with a current organization passes the capability gate and stays in that organization', async () => {
         const answer = await boot(engine, { userId: 'u_sys', isSystem: true, tenantId: 'org_b' })
             .call({ object: 'deal', field: 'amount', code: 'EUR', apply: true });