diff --git a/.github/workflows/i18n-pull.yaml b/.github/workflows/i18n-pull.yaml
index eccf004681a..ecac4bf51f0 100644
--- a/.github/workflows/i18n-pull.yaml
+++ b/.github/workflows/i18n-pull.yaml
@@ -87,9 +87,11 @@ jobs:
       - name: Fix file permissions
         run: sudo chown -R runner:docker .
 
-      # Fix encoding issues (escaped Unicode like \u62db -> 招) and push fixes back to Crowdin
+      # Fix encoding issues (escaped Unicode like \u62db -> 招) and translations carrying a
+      # leaked response envelope, then push the fixes back to Crowdin so they
+      # survive the next sync.
       - name: Normalize translations in Crowdin
-        run: npx tsx packages/twenty-utils/crowdin-normalizer/normalize-crowdin-translations.ts --project=1 --apply --rules=escaped-unicode || echo "::warning::translation normalization failed (non-blocking)"
+        run: npx tsx packages/twenty-utils/crowdin-normalizer/normalize-crowdin-translations.ts --project=1 --apply --rules=escaped-unicode,corrupted-model-output,invented-markup,invented-argument || echo "::warning::translation normalization failed (non-blocking)"
         env:
           CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}
 
diff --git a/packages/twenty-utils/crowdin-normalizer/constants/normalization-rules.constant.ts b/packages/twenty-utils/crowdin-normalizer/constants/normalization-rules.constant.ts
index 1a96b7f4a46..7c358e1dabf 100644
--- a/packages/twenty-utils/crowdin-normalizer/constants/normalization-rules.constant.ts
+++ b/packages/twenty-utils/crowdin-normalizer/constants/normalization-rules.constant.ts
@@ -1,8 +1,14 @@
+import { CORRUPTED_MODEL_OUTPUT_RULE } from '../rules/corrupted-model-output.rule';
 import { ESCAPED_INLINE_CODE_TAGS_RULE } from '../rules/escaped-inline-code-tags.rule';
 import { ESCAPED_UNICODE_RULE } from '../rules/escaped-unicode.rule';
+import { INVENTED_ARGUMENT_RULE } from '../rules/invented-argument.rule';
+import { INVENTED_MARKUP_RULE } from '../rules/invented-markup.rule';
 import { type NormalizationRule } from '../types/normalization-rule.type';
 
 export const NORMALIZATION_RULES: NormalizationRule[] = [
   ESCAPED_UNICODE_RULE,
   ESCAPED_INLINE_CODE_TAGS_RULE,
+  CORRUPTED_MODEL_OUTPUT_RULE,
+  INVENTED_MARKUP_RULE,
+  INVENTED_ARGUMENT_RULE,
 ];
diff --git a/packages/twenty-utils/crowdin-normalizer/normalize-crowdin-translations.ts b/packages/twenty-utils/crowdin-normalizer/normalize-crowdin-translations.ts
index 40f2a76ba06..c6ff5cd0d62 100644
--- a/packages/twenty-utils/crowdin-normalizer/normalize-crowdin-translations.ts
+++ b/packages/twenty-utils/crowdin-normalizer/normalize-crowdin-translations.ts
@@ -163,11 +163,16 @@ async function repairOne(
   finding: NormalizationFinding,
 ): Promise<boolean> {
   try {
-    await addTranslation(context, {
-      stringId: finding.stringId,
-      languageId: finding.languageId,
-      text: finding.fixedText,
-    });
+    // An empty repair means the translation could not be salvaged: deleting it
+    // without a replacement falls back to English until Crowdin retranslates.
+    if (finding.fixedText !== '') {
+      await addTranslation(context, {
+        stringId: finding.stringId,
+        languageId: finding.languageId,
+        text: finding.fixedText,
+      });
+    }
+
     await deleteTranslation(context, { translationId: finding.translationId });
 
     return true;
@@ -206,7 +211,9 @@ async function main() {
   );
   console.log(`Rules: ${rules.map((rule) => rule.name).join(', ')}`);
 
-  const needsSourceStrings = rules.some((rule) => rule.sourceFilter);
+  const needsSourceStrings = rules.some(
+    (rule) => rule.sourceFilter !== undefined || rule.needsSourceText === true,
+  );
   const sourceStrings = needsSourceStrings
     ? await fetchSourceStringsById(context)
     : undefined;
@@ -221,7 +228,11 @@ async function main() {
     );
     if (finding.sourceText) console.log(`  source: ${finding.sourceText}`);
     console.log(`  trans:  ${finding.originalText}`);
-    console.log(`  fixed:  ${finding.fixedText}`);
+    console.log(
+      finding.fixedText === ''
+        ? '  fixed:  <deleted, falls back to English until retranslated>'
+        : `  fixed:  ${finding.fixedText}`,
+    );
   }
 
   if (findings.length === 0) {
diff --git a/packages/twenty-utils/crowdin-normalizer/rules/__tests__/corrupted-model-output.rule.spec.ts b/packages/twenty-utils/crowdin-normalizer/rules/__tests__/corrupted-model-output.rule.spec.ts
new file mode 100644
index 00000000000..e040f5d6b5b
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/rules/__tests__/corrupted-model-output.rule.spec.ts
@@ -0,0 +1,99 @@
+import { CORRUPTED_MODEL_OUTPUT_RULE } from '../corrupted-model-output.rule';
+
+const { detect, fix } = CORRUPTED_MODEL_OUTPUT_RULE;
+
+describe('CORRUPTED_MODEL_OUTPUT_RULE', () => {
+  it('cuts a leaked response envelope off a plain translation', () => {
+    const sourceText = 'Group name';
+    const translationText =
+      'Nome do grupo}]}``` }}} code block? Wait. We messed up.';
+
+    expect(detect(translationText, sourceText)).toBe(true);
+    expect(fix(translationText, sourceText)).toBe('Nome do grupo');
+  });
+
+  it('cuts a trailing JSON array separator', () => {
+    expect(detect('レコードテーブルを編集},{', 'Edit Record Table')).toBe(true);
+    expect(fix('レコードテーブルを編集},{', 'Edit Record Table')).toBe(
+      'レコードテーブルを編集',
+    );
+  });
+
+  it('keeps a plural block intact while dropping the envelope after it', () => {
+    const sourceText =
+      '{hiddenFieldCount, plural, one {# more populated field available} other {# more populated fields available}}';
+    const translationText =
+      '{hiddenFieldCount, plural, other {還有 # 個已填入欄位可用}}}]}દાવાદ്?ฤศจassistant to=developer';
+
+    expect(detect(translationText, sourceText)).toBe(true);
+    expect(fix(translationText, sourceText)).toBe(
+      '{hiddenFieldCount, plural, other {還有 # 個已填入欄位可用}}',
+    );
+  });
+
+  it('keeps a closing quote the source also ends with', () => {
+    const sourceText = 'Set fields created in the future as "visible"';
+    const translationText =
+      'Aseta tulevaisuudessa luotavat kentät "näkyviksi"}]}``` }]} } } }';
+
+    expect(fix(translationText, sourceText)).toBe(
+      'Aseta tulevaisuudessa luotavat kentät "näkyviksi"',
+    );
+  });
+
+  it('drops a trailing apostrophe the source does not carry', () => {
+    const sourceText = 'An error occurred';
+
+    expect(fix("'n Fout het voorgekom'}]}```}``` }```{", sourceText)).toBe(
+      "'n Fout het voorgekom",
+    );
+  });
+
+  it('deletes a translation whose salvageable prefix is still envelope', () => {
+    const sourceText = 'Trigger';
+    const translationText = 'הפעל","pluralForm":null}]}]}{';
+
+    expect(detect(translationText, sourceText)).toBe(true);
+    expect(fix(translationText, sourceText)).toBe('');
+  });
+
+  it('deletes a translation with an unclosed brace and no clean cut', () => {
+    expect(fix('Nome do grupo {broken', 'Group name')).toBe('');
+  });
+
+  it('keeps markdown links when the source carries them too', () => {
+    const sourceText = 'See [Getting Started](https://twenty.com/docs) first.';
+    const translationText =
+      'Consulte [Introdução](https://twenty.com/docs) primeiro.},{';
+
+    expect(fix(translationText, sourceText)).toBe(
+      'Consulte [Introdução](https://twenty.com/docs) primeiro.',
+    );
+  });
+
+  it('does not flag a healthy translation', () => {
+    expect(detect('Nome do grupo', 'Group name')).toBe(false);
+    expect(
+      detect(
+        '{count, plural, other {# champs}}',
+        '{count, plural, one {# field} other {# fields}}',
+      ),
+    ).toBe(false);
+  });
+
+  it('does not flag when the source is unavailable', () => {
+    expect(detect('Nome do grupo}]}', undefined)).toBe(false);
+  });
+
+  it('does not flag when the source is itself unbalanced', () => {
+    expect(detect('Algo}', 'Something}')).toBe(false);
+  });
+
+  it('is idempotent', () => {
+    const sourceText = 'Group name';
+    const once = fix('Nome do grupo}]}``` }}}', sourceText);
+
+    expect(detect(once, sourceText)).toBe(false);
+    expect(fix(once, sourceText)).toBe(once);
+  });
+});
diff --git a/packages/twenty-utils/crowdin-normalizer/rules/__tests__/invented-argument.rule.spec.ts b/packages/twenty-utils/crowdin-normalizer/rules/__tests__/invented-argument.rule.spec.ts
new file mode 100644
index 00000000000..7dde649830d
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/rules/__tests__/invented-argument.rule.spec.ts
@@ -0,0 +1,66 @@
+import { INVENTED_ARGUMENT_RULE } from '../invented-argument.rule';
+
+const { detect, fix } = INVENTED_ARGUMENT_RULE;
+
+describe('INVENTED_ARGUMENT_RULE', () => {
+  it('restores the source spelling of a recased argument', () => {
+    const sourceText =
+      'Multiple records found for {conflictingFieldsValues}. Cannot determine which record to update.';
+    const translationText =
+      '{ConflictingFieldsValues} のために複数のレコードが見つかりました。';
+
+    expect(detect(translationText, sourceText)).toBe(true);
+    expect(fix(translationText, sourceText)).toBe(
+      '{conflictingFieldsValues} のために複数のレコードが見つかりました。',
+    );
+  });
+
+  it('deletes a translation that pluralises an argument-less source', () => {
+    const sourceText = 'Record(s) selected';
+    const translationText =
+      '{count, plural, one {# registro selecionado} other {# registros selecionados}}';
+
+    expect(detect(translationText, sourceText)).toBe(true);
+    expect(fix(translationText, sourceText)).toBe('');
+  });
+
+  it('deletes a translation that adds an argument nothing will supply', () => {
+    const sourceText = 'We keep your data for {dataRetentionDays} days.';
+    const translationText =
+      'Чувамо податке {dataRetentionDays} {dayOrDays}.';
+
+    expect(fix(translationText, sourceText)).toBe('');
+  });
+
+  it('allows a translation to add plural cases its locale needs', () => {
+    const sourceText = '{count, plural, one {# record} other {# records}}';
+    const translationText =
+      '{count, plural, one {# запись} few {# записи} many {# записей} other {# записи}}';
+
+    expect(detect(translationText, sourceText)).toBe(false);
+  });
+
+  it('does not read plural case bodies as arguments', () => {
+    const sourceText = '{unitCount, plural, one {Day} other {Days}}';
+    const translationText = '{unitCount, plural, one {Dag} other {Dae}}';
+
+    expect(detect(translationText, sourceText)).toBe(false);
+  });
+
+  it('does not flag a matching translation or a missing source', () => {
+    expect(detect('Supprimer {name}', 'Delete {name}')).toBe(false);
+    expect(detect('Supprimer {objet}', undefined)).toBe(false);
+  });
+
+  it('ignores a dropped argument, which it cannot repair', () => {
+    expect(detect('Supprimer', 'Delete {name}')).toBe(false);
+  });
+
+  it('is idempotent', () => {
+    const sourceText = 'Found for {conflictingFieldsValues}.';
+    const once = fix('{ConflictingFieldsValues} で見つかりました。', sourceText);
+
+    expect(detect(once, sourceText)).toBe(false);
+    expect(fix(once, sourceText)).toBe(once);
+  });
+});
diff --git a/packages/twenty-utils/crowdin-normalizer/rules/__tests__/invented-markup.rule.spec.ts b/packages/twenty-utils/crowdin-normalizer/rules/__tests__/invented-markup.rule.spec.ts
new file mode 100644
index 00000000000..93948a32c50
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/rules/__tests__/invented-markup.rule.spec.ts
@@ -0,0 +1,54 @@
+import { INVENTED_MARKUP_RULE } from '../invented-markup.rule';
+
+const { detect, fix } = INVENTED_MARKUP_RULE;
+
+describe('INVENTED_MARKUP_RULE', () => {
+  it('strips a highlight span the source never had', () => {
+    const sourceText = 'is not a valid calling code';
+    const translationText =
+      'n\'est pas un <span class="highlight">code d\'appel valide</span>';
+
+    expect(detect(translationText, sourceText)).toBe(true);
+    expect(fix(translationText, sourceText)).toBe(
+      "n'est pas un code d'appel valide",
+    );
+  });
+
+  it('strips nested direction spans', () => {
+    const translationText =
+      '<span dir="rtl"><span dir="ltr">כשל זמני</span></span>';
+
+    expect(fix(translationText, 'Temporary Failure')).toBe('כשל זמני');
+  });
+
+  it('strips bold added around numbers and punctuation', () => {
+    expect(fix('過去<b>12</b>時間', 'Last 12 hours')).toBe('過去12時間');
+    expect(fix('API名<b>（</b>単数形<b>）</b>', 'API Name (Singular)')).toBe(
+      'API名（単数形）',
+    );
+  });
+
+  it('leaves a translation alone when the source carries markup of its own', () => {
+    const sourceText = 'Your workspace <0>{name}</0> was deleted.';
+    const translationText = 'Ваш простор <0>{name}</0> је обрисан.';
+
+    expect(detect(translationText, sourceText)).toBe(false);
+  });
+
+  it('leaves a Lingui-tagged source alone even when the translation uses html', () => {
+    expect(detect('Votre <b>espace</b>', 'Your <0>workspace</0>')).toBe(false);
+  });
+
+  it('does not flag a plain translation, a comparison, or a missing source', () => {
+    expect(detect('Rechercher', 'Search')).toBe(false);
+    expect(detect('moins de < 5 minutes', 'less than < 5 minutes')).toBe(false);
+    expect(detect('<b>Recherche</b>', undefined)).toBe(false);
+  });
+
+  it('is idempotent', () => {
+    const once = fix('過去<b>4</b>時間', 'Last 4 hours');
+
+    expect(detect(once, 'Last 4 hours')).toBe(false);
+    expect(fix(once, 'Last 4 hours')).toBe(once);
+  });
+});
diff --git a/packages/twenty-utils/crowdin-normalizer/rules/corrupted-model-output.rule.ts b/packages/twenty-utils/crowdin-normalizer/rules/corrupted-model-output.rule.ts
new file mode 100644
index 00000000000..5b661c1ba70
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/rules/corrupted-model-output.rule.ts
@@ -0,0 +1,130 @@
+import { type NormalizationRule } from '../types/normalization-rule.type';
+
+// Trailing characters the machine translator leaves behind once its response
+// envelope bleeds into the string. Only stripped when the source does not end
+// the same way, so legitimate quotes and brackets survive.
+const DEBRIS_CHARACTERS = new Set([
+  ' ',
+  '\t',
+  '\n',
+  '\r',
+  ' ',
+  '`',
+  ']',
+  "'",
+  '"',
+]);
+
+// Fragments of the translator's own JSON/markdown envelope. A salvaged prefix
+// carrying one of these was cut inside the envelope rather than after it.
+const ENVELOPE_REGEX = /pluralForm|```|\\",\\"|\[/;
+
+const ICU_ARGUMENT_REGEX = /\{\s*([A-Za-z0-9_]+)\s*[,}]/g;
+const ICU_TAG_REGEX = /<\/?\d+>/g;
+
+function hasBalancedBraces(text: string): boolean {
+  let depth = 0;
+
+  for (const character of text) {
+    if (character === '{') {
+      depth += 1;
+      continue;
+    }
+
+    if (character === '}') {
+      depth -= 1;
+
+      if (depth < 0) {
+        return false;
+      }
+    }
+  }
+
+  return depth === 0;
+}
+
+// The first unmatched '}' is where the translation ends and the envelope begins.
+function cutAtUnmatchedBrace(text: string): string | undefined {
+  let depth = 0;
+
+  for (let index = 0; index < text.length; index += 1) {
+    const character = text[index];
+
+    if (character === '{') {
+      depth += 1;
+      continue;
+    }
+
+    if (character === '}') {
+      if (depth === 0) {
+        return text.slice(0, index);
+      }
+
+      depth -= 1;
+    }
+  }
+
+  return undefined;
+}
+
+function trimDebris(text: string, sourceText: string): string {
+  let end = text.length;
+
+  while (
+    end > 0 &&
+    DEBRIS_CHARACTERS.has(text[end - 1]) &&
+    !sourceText.endsWith(text[end - 1])
+  ) {
+    end -= 1;
+  }
+
+  return text.slice(0, end);
+}
+
+function icuShape(text: string): string {
+  const argumentNames = [...text.matchAll(ICU_ARGUMENT_REGEX)]
+    .map(([, name]) => name)
+    .sort();
+  const tags = [...text.matchAll(ICU_TAG_REGEX)].map(([tag]) => tag).sort();
+
+  return JSON.stringify([argumentNames, tags]);
+}
+
+function isCorrupted(text: string, sourceText?: string): boolean {
+  return (
+    sourceText !== undefined &&
+    hasBalancedBraces(sourceText) &&
+    !hasBalancedBraces(text)
+  );
+}
+
+function salvage(text: string, sourceText?: string): string {
+  const source = sourceText ?? '';
+  const cutText = cutAtUnmatchedBrace(text);
+
+  // Balanced text has nothing to cut. Otherwise an unclosed '{' is all that is
+  // left, with no clean tail to cut after, so the translation is dropped rather
+  // than guessed at.
+  if (cutText === undefined) {
+    return hasBalancedBraces(text) ? text : '';
+  }
+
+  const salvagedText = trimDebris(cutText, source);
+
+  const isSalvageable =
+    salvagedText !== '' &&
+    hasBalancedBraces(salvagedText) &&
+    (!ENVELOPE_REGEX.test(salvagedText) || ENVELOPE_REGEX.test(source)) &&
+    icuShape(salvagedText) === icuShape(source);
+
+  // An empty repair tells the runner to delete the translation rather than
+  // replace it, so the locale falls back to English until Crowdin retranslates.
+  return isSalvageable ? salvagedText : '';
+}
+
+export const CORRUPTED_MODEL_OUTPUT_RULE: NormalizationRule = {
+  name: 'corrupted-model-output',
+  needsSourceText: true,
+  detect: isCorrupted,
+  fix: salvage,
+};
diff --git a/packages/twenty-utils/crowdin-normalizer/rules/invented-argument.rule.ts b/packages/twenty-utils/crowdin-normalizer/rules/invented-argument.rule.ts
new file mode 100644
index 00000000000..0f1c0a5eb02
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/rules/invented-argument.rule.ts
@@ -0,0 +1,86 @@
+import { type NormalizationRule } from '../types/normalization-rule.type';
+
+const ARGUMENT_NAME_REGEX = /^\{\s*([A-Za-z0-9_]+)\s*[,}]/;
+
+// Arguments the message itself takes, ignoring plural and select case bodies:
+// a translation may add cases its locale needs, but never a new argument, which
+// the caller has no value for.
+function topLevelArgumentNames(text: string): Set<string> {
+  const names = new Set<string>();
+  let depth = 0;
+
+  for (let index = 0; index < text.length; index += 1) {
+    const character = text[index];
+
+    if (character === '{') {
+      if (depth === 0) {
+        const match = ARGUMENT_NAME_REGEX.exec(text.slice(index));
+
+        if (match !== null) names.add(match[1]);
+      }
+
+      depth += 1;
+      continue;
+    }
+
+    if (character === '}') depth -= 1;
+  }
+
+  return names;
+}
+
+function inventedArgumentNames(text: string, sourceText: string): string[] {
+  const sourceNames = topLevelArgumentNames(sourceText);
+
+  return [...topLevelArgumentNames(text)].filter(
+    (name) => !sourceNames.has(name),
+  );
+}
+
+function renameArgument(text: string, from: string, to: string): string {
+  return text.replace(
+    new RegExp(`\\{\\s*${from}\\s*(?=[,}])`, 'g'),
+    `{${to}`,
+  );
+}
+
+function hasInventedArgument(text: string, sourceText?: string): boolean {
+  return (
+    sourceText !== undefined && inventedArgumentNames(text, sourceText).length > 0
+  );
+}
+
+function repairInventedArgument(text: string, sourceText?: string): string {
+  const source = sourceText ?? '';
+  const sourceNames = [...topLevelArgumentNames(source)];
+
+  const repairedText = inventedArgumentNames(text, source).reduce(
+    (accumulator, inventedName) => {
+      // Only a difference in spelling can be repaired: the argument is the same
+      // one, so restoring the source's casing makes it resolve again.
+      const intendedName = sourceNames.find(
+        (name) =>
+          name.toLowerCase() === inventedName.toLowerCase() &&
+          !topLevelArgumentNames(accumulator).has(name),
+      );
+
+      return intendedName === undefined
+        ? accumulator
+        : renameArgument(accumulator, inventedName, intendedName);
+    },
+    text,
+  );
+
+  // An argument the source never had has no value to render, so an unrepaired
+  // translation is dropped rather than shipped with a dangling placeholder.
+  return inventedArgumentNames(repairedText, source).length > 0
+    ? ''
+    : repairedText;
+}
+
+export const INVENTED_ARGUMENT_RULE: NormalizationRule = {
+  name: 'invented-argument',
+  needsSourceText: true,
+  detect: hasInventedArgument,
+  fix: repairInventedArgument,
+};
diff --git a/packages/twenty-utils/crowdin-normalizer/rules/invented-markup.rule.ts b/packages/twenty-utils/crowdin-normalizer/rules/invented-markup.rule.ts
new file mode 100644
index 00000000000..f411e13e73b
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/rules/invented-markup.rule.ts
@@ -0,0 +1,31 @@
+import { type NormalizationRule } from '../types/normalization-rule.type';
+
+// Any markup tag, including Lingui's numbered ones (<0>), so a source carrying
+// tags of its own is left entirely alone.
+const TAG_PATTERN = '<\\/?[A-Za-z0-9][^<>]*>';
+const TAG_REGEX = new RegExp(TAG_PATTERN);
+const ALL_TAGS_REGEX = new RegExp(TAG_PATTERN, 'g');
+
+// The machine translator sometimes decorates a plain string with markup of its
+// own - RTL spans, bold around numbers, highlight spans - which the reader then
+// sees as literal tags.
+function hasInventedMarkup(text: string, sourceText?: string): boolean {
+  return (
+    sourceText !== undefined &&
+    !TAG_REGEX.test(sourceText) &&
+    TAG_REGEX.test(text)
+  );
+}
+
+// Stripping everything leaves nothing to say, and the empty result drops the
+// translation rather than shipping a blank string.
+function removeInventedMarkup(text: string): string {
+  return text.replace(ALL_TAGS_REGEX, '').trim();
+}
+
+export const INVENTED_MARKUP_RULE: NormalizationRule = {
+  name: 'invented-markup',
+  needsSourceText: true,
+  detect: hasInventedMarkup,
+  fix: removeInventedMarkup,
+};
diff --git a/packages/twenty-utils/crowdin-normalizer/types/normalization-rule.type.ts b/packages/twenty-utils/crowdin-normalizer/types/normalization-rule.type.ts
index 59d45525ffd..acee21fa150 100644
--- a/packages/twenty-utils/crowdin-normalizer/types/normalization-rule.type.ts
+++ b/packages/twenty-utils/crowdin-normalizer/types/normalization-rule.type.ts
@@ -1,6 +1,11 @@
 export type NormalizationRule = {
   name: string;
-  detect: (text: string) => boolean;
-  fix: (text: string) => string;
+  detect: (text: string, sourceText?: string) => boolean;
+  // Returning an empty string means the translation could not be salvaged and
+  // should be deleted rather than replaced.
+  fix: (text: string, sourceText?: string) => string;
+  // Set by rules that compare a translation against its source but select every
+  // string rather than narrowing with sourceFilter.
+  needsSourceText?: boolean;
   sourceFilter?: (sourceText: string) => boolean;
 };
diff --git a/packages/twenty-utils/crowdin-normalizer/utils/__tests__/is-identical-translation-error.util.spec.ts b/packages/twenty-utils/crowdin-normalizer/utils/__tests__/is-identical-translation-error.util.spec.ts
deleted file mode 100644
index e6c0a9aaf19..00000000000
--- a/packages/twenty-utils/crowdin-normalizer/utils/__tests__/is-identical-translation-error.util.spec.ts
+++ /dev/null
@@ -1,57 +0,0 @@
-import { CrowdinApiError } from '../../errors/crowdin-api.error';
-import { isIdenticalTranslationError } from '../is-identical-translation-error.util';
-
-const buildError = (body: string) => new CrowdinApiError(400, body);
-
-describe('isIdenticalTranslationError', () => {
-  it('recognises the identical-translation error code', () => {
-    const error = buildError(
-      JSON.stringify({
-        errors: [
-          {
-            error: {
-              key: 'text',
-              errors: [
-                {
-                  code: 'identicalTranslation',
-                  message: 'Identical translation already saved',
-                },
-              ],
-            },
-          },
-        ],
-      }),
-    );
-
-    expect(isIdenticalTranslationError(error)).toBe(true);
-  });
-
-  it('does not treat another failure as identical because of its wording', () => {
-    const error = buildError(
-      JSON.stringify({
-        errors: [
-          {
-            error: {
-              key: 'stringId',
-              errors: [
-                {
-                  code: 'notFound',
-                  message: 'String is identical to a deleted one',
-                },
-              ],
-            },
-          },
-        ],
-      }),
-    );
-
-    expect(isIdenticalTranslationError(error)).toBe(false);
-  });
-
-  it('rejects a non-JSON body and any non-Crowdin error', () => {
-    expect(isIdenticalTranslationError(buildError('<html>502</html>'))).toBe(
-      false,
-    );
-    expect(isIdenticalTranslationError(new Error('identical'))).toBe(false);
-  });
-});
diff --git a/packages/twenty-utils/crowdin-normalizer/utils/__tests__/is-translation-already-present-error.util.spec.ts b/packages/twenty-utils/crowdin-normalizer/utils/__tests__/is-translation-already-present-error.util.spec.ts
new file mode 100644
index 00000000000..7e697143882
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/utils/__tests__/is-translation-already-present-error.util.spec.ts
@@ -0,0 +1,64 @@
+import { CrowdinApiError } from '../../errors/crowdin-api.error';
+import { isTranslationAlreadyPresentError } from '../is-translation-already-present-error.util';
+
+const buildError = (body: string) => new CrowdinApiError(400, body);
+
+const buildDetailError = (detail: { code: string; message: string }) =>
+  buildError(
+    JSON.stringify({
+      errors: [{ error: { key: 'translation', errors: [detail] } }],
+    }),
+  );
+
+describe('isTranslationAlreadyPresentError', () => {
+  it('recognises the identical-translation error code', () => {
+    expect(
+      isTranslationAlreadyPresentError(
+        buildDetailError({
+          code: 'identicalTranslation',
+          message: 'Identical translation already saved',
+        }),
+      ),
+    ).toBe(true);
+  });
+
+  it('recognises the duplicate-translation validation error', () => {
+    expect(
+      isTranslationAlreadyPresentError(
+        buildDetailError({
+          code: 'validationError',
+          message: 'Duplicate translation. Please vote or approve the original.',
+        }),
+      ),
+    ).toBe(true);
+  });
+
+  it('does not swallow an unrelated validation error', () => {
+    expect(
+      isTranslationAlreadyPresentError(
+        buildDetailError({
+          code: 'validationError',
+          message: 'Translation is too long',
+        }),
+      ),
+    ).toBe(false);
+  });
+
+  it('does not treat another failure as present because of its wording', () => {
+    expect(
+      isTranslationAlreadyPresentError(
+        buildDetailError({
+          code: 'notFound',
+          message: 'String is identical to a deleted one',
+        }),
+      ),
+    ).toBe(false);
+  });
+
+  it('rejects a non-JSON body and any non-Crowdin error', () => {
+    expect(
+      isTranslationAlreadyPresentError(buildError('<html>502</html>')),
+    ).toBe(false);
+    expect(isTranslationAlreadyPresentError(new Error('identical'))).toBe(false);
+  });
+});
diff --git a/packages/twenty-utils/crowdin-normalizer/utils/add-translation.util.ts b/packages/twenty-utils/crowdin-normalizer/utils/add-translation.util.ts
index 2f5916ec298..b9f13b9a80a 100644
--- a/packages/twenty-utils/crowdin-normalizer/utils/add-translation.util.ts
+++ b/packages/twenty-utils/crowdin-normalizer/utils/add-translation.util.ts
@@ -1,6 +1,6 @@
 import { type CrowdinContext } from '../types/crowdin-context.type';
 import { crowdinRequest } from './crowdin-request.util';
-import { isIdenticalTranslationError } from './is-identical-translation-error.util';
+import { isTranslationAlreadyPresentError } from './is-translation-already-present-error.util';
 
 export async function addTranslation(
   context: CrowdinContext,
@@ -20,6 +20,6 @@ export async function addTranslation(
       },
     );
   } catch (error) {
-    if (!isIdenticalTranslationError(error)) throw error;
+    if (!isTranslationAlreadyPresentError(error)) throw error;
   }
 }
diff --git a/packages/twenty-utils/crowdin-normalizer/utils/evaluate-rules.util.ts b/packages/twenty-utils/crowdin-normalizer/utils/evaluate-rules.util.ts
index 1361543689c..f70dfb8e41d 100644
--- a/packages/twenty-utils/crowdin-normalizer/utils/evaluate-rules.util.ts
+++ b/packages/twenty-utils/crowdin-normalizer/utils/evaluate-rules.util.ts
@@ -15,12 +15,12 @@ export function evaluateRules({
         rule.sourceFilter !== undefined &&
         (sourceText === undefined || !rule.sourceFilter(sourceText));
 
-      if (isFilteredOut || !rule.detect(accumulator.fixedText)) {
+      if (isFilteredOut || !rule.detect(accumulator.fixedText, sourceText)) {
         return accumulator;
       }
 
       return {
-        fixedText: rule.fix(accumulator.fixedText),
+        fixedText: rule.fix(accumulator.fixedText, sourceText),
         ruleNames: [...accumulator.ruleNames, rule.name],
       };
     },
diff --git a/packages/twenty-utils/crowdin-normalizer/utils/is-identical-translation-error.util.ts b/packages/twenty-utils/crowdin-normalizer/utils/is-identical-translation-error.util.ts
deleted file mode 100644
index 7d2a419c8f7..00000000000
--- a/packages/twenty-utils/crowdin-normalizer/utils/is-identical-translation-error.util.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-import { CrowdinApiError } from '../errors/crowdin-api.error';
-
-const IDENTICAL_TRANSLATION_CODE = 'identicalTranslation';
-
-export function isIdenticalTranslationError(error: unknown): boolean {
-  if (!(error instanceof CrowdinApiError)) return false;
-
-  type ErrorBody = {
-    errors?: Array<{ error?: { errors?: Array<{ code?: string }> } }>;
-  };
-
-  try {
-    const body = JSON.parse(error.body) as ErrorBody;
-
-    return (body.errors ?? []).some((entry) =>
-      (entry.error?.errors ?? []).some(
-        (detail) => detail.code === IDENTICAL_TRANSLATION_CODE,
-      ),
-    );
-  } catch {
-    return false;
-  }
-}
diff --git a/packages/twenty-utils/crowdin-normalizer/utils/is-translation-already-present-error.util.ts b/packages/twenty-utils/crowdin-normalizer/utils/is-translation-already-present-error.util.ts
new file mode 100644
index 00000000000..e8a7e459fc9
--- /dev/null
+++ b/packages/twenty-utils/crowdin-normalizer/utils/is-translation-already-present-error.util.ts
@@ -0,0 +1,33 @@
+import { CrowdinApiError } from '../errors/crowdin-api.error';
+
+const IDENTICAL_TRANSLATION_CODE = 'identicalTranslation';
+const VALIDATION_ERROR_CODE = 'validationError';
+
+// validationError also covers unrelated refusals, so the wording has to narrow
+// it down to the one that means the text we wanted is already there.
+const DUPLICATE_TRANSLATION_REGEX = /duplicate translation/i;
+
+type CrowdinErrorBody = {
+  errors?: Array<{
+    error?: { errors?: Array<{ code?: string; message?: string }> };
+  }>;
+};
+
+export function isTranslationAlreadyPresentError(error: unknown): boolean {
+  if (!(error instanceof CrowdinApiError)) return false;
+
+  try {
+    const body = JSON.parse(error.body) as CrowdinErrorBody;
+
+    return (body.errors ?? []).some((entry) =>
+      (entry.error?.errors ?? []).some(
+        (detail) =>
+          detail.code === IDENTICAL_TRANSLATION_CODE ||
+          (detail.code === VALIDATION_ERROR_CODE &&
+            DUPLICATE_TRANSLATION_REGEX.test(detail.message ?? '')),
+      ),
+    );
+  } catch {
+    return false;
+  }
+}