diff --git a/CLAUDE.md b/CLAUDE.md
index 552aeefc..ae9127c0 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -163,7 +163,7 @@ Input DTOs live flat in the domain package. Response types are the model entitie
 
 → See [CONTRIBUTING.md §Error handling](./CONTRIBUTING.md#error-handling)
 
-**LLM reminder:** use `DomainException.notFound/forbidden/conflict/internal()` from service methods — never throw raw exceptions. When adding a new `ErrorCode`: (1) add to `ErrorCode.java`, (2) add to `ErrorCode` type in `frontend/src/lib/shared/errors.ts`, (3) add a `case` in `getErrorMessage()`, (4) add i18n keys in `messages/{de,en,es}.json`. Valid error codes include: `TOO_MANY_LOGIN_ATTEMPTS` (returned by `LoginRateLimiter` as HTTP 429 when a brute-force threshold is exceeded); `JOURNEY_NOTE_TOO_LONG`, `JOURNEY_DOCUMENT_ALREADY_ADDED`, `GESCHICHTE_TYPE_IMMUTABLE` (journey/geschichte domain constraints).
+**LLM reminder:** use `DomainException.notFound/forbidden/conflict/internal()` from service methods — never throw raw exceptions. When adding a new `ErrorCode`: (1) add to `ErrorCode.java`, (2) add to `ErrorCode` type in `frontend/src/lib/shared/errors.ts`, (3) add a `case` in `getErrorMessage()`, (4) add i18n keys in `messages/{de,en,es}.json`. Valid error codes include: `TOO_MANY_LOGIN_ATTEMPTS` (returned by `LoginRateLimiter` as HTTP 429 when a brute-force threshold is exceeded); `JOURNEY_NOTE_TOO_LONG`, `JOURNEY_DOCUMENT_ALREADY_ADDED`, `GESCHICHTE_TYPE_IMMUTABLE`, `GESCHICHTE_TITLE_TOO_LONG`, `GESCHICHTE_INTRO_TOO_LONG` (journey/geschichte domain constraints).
 
 ### Security / Permissions
 
@@ -271,7 +271,7 @@ Back button pattern — use the shared `<BackButton>` component from `$lib/share
 
 → See [CONTRIBUTING.md §Error handling](./CONTRIBUTING.md#error-handling)
 
-**LLM reminder:** when adding a new `ErrorCode`: (1) add to `ErrorCode.java`, (2) add to `ErrorCode` type in `frontend/src/lib/shared/errors.ts`, (3) add a `case` in `getErrorMessage()`, (4) add i18n keys in `messages/{de,en,es}.json`. Valid error codes include: `TOO_MANY_LOGIN_ATTEMPTS` (returned by `LoginRateLimiter` as HTTP 429 when a brute-force threshold is exceeded); `JOURNEY_NOTE_TOO_LONG`, `JOURNEY_DOCUMENT_ALREADY_ADDED`, `GESCHICHTE_TYPE_IMMUTABLE` (journey/geschichte domain constraints).
+**LLM reminder:** when adding a new `ErrorCode`: (1) add to `ErrorCode.java`, (2) add to `ErrorCode` type in `frontend/src/lib/shared/errors.ts`, (3) add a `case` in `getErrorMessage()`, (4) add i18n keys in `messages/{de,en,es}.json`. Valid error codes include: `TOO_MANY_LOGIN_ATTEMPTS` (returned by `LoginRateLimiter` as HTTP 429 when a brute-force threshold is exceeded); `JOURNEY_NOTE_TOO_LONG`, `JOURNEY_DOCUMENT_ALREADY_ADDED`, `GESCHICHTE_TYPE_IMMUTABLE`, `GESCHICHTE_TITLE_TOO_LONG`, `GESCHICHTE_INTRO_TOO_LONG` (journey/geschichte domain constraints).
 
 ---
 
diff --git a/backend/src/main/java/org/raddatz/familienarchiv/exception/ErrorCode.java b/backend/src/main/java/org/raddatz/familienarchiv/exception/ErrorCode.java
index ba8eac3b..4fb36a13 100644
--- a/backend/src/main/java/org/raddatz/familienarchiv/exception/ErrorCode.java
+++ b/backend/src/main/java/org/raddatz/familienarchiv/exception/ErrorCode.java
@@ -136,6 +136,10 @@ public enum ErrorCode {
     GESCHICHTE_TYPE_IMMUTABLE,
     /** A journey-item note exceeds the maximum length (2000 characters). 400 */
     JOURNEY_NOTE_TOO_LONG,
+    /** A Geschichte title exceeds the maximum length (255 characters — the DB column bound). 400 */
+    GESCHICHTE_TITLE_TOO_LONG,
+    /** A JOURNEY intro (body) exceeds the maximum length (4000 characters). 400 */
+    GESCHICHTE_INTRO_TOO_LONG,
 
     // --- Tags ---
     /** A tag with the given ID does not exist. 404 */
diff --git a/backend/src/main/java/org/raddatz/familienarchiv/geschichte/GeschichteService.java b/backend/src/main/java/org/raddatz/familienarchiv/geschichte/GeschichteService.java
index 9df6c131..34f3ff9b 100644
--- a/backend/src/main/java/org/raddatz/familienarchiv/geschichte/GeschichteService.java
+++ b/backend/src/main/java/org/raddatz/familienarchiv/geschichte/GeschichteService.java
@@ -50,6 +50,15 @@ public class GeschichteService {
     private static final int DEFAULT_LIMIT = 50;
     private static final int MAX_LIMIT = 200;
 
+    // Matches the geschichten.title VARCHAR(255) column (V58) — the service check
+    // turns what would be a DB-level 500 into a friendly 400.
+    static final int MAX_TITLE_LENGTH = 255;
+    // JOURNEY intros travel the verbatim (unsanitized) write path, so they get the
+    // same three-layer bound as journey notes: frontend maxlength, this check, and
+    // the V75 CHECK constraint. STORY bodies are sanitized Tiptap HTML and stay
+    // unbounded on purpose.
+    static final int MAX_INTRO_LENGTH = 4000;
+
     // ─── Read API ────────────────────────────────────────────────────────────
 
     public long countPublished() {
@@ -205,6 +214,10 @@ public class GeschichteService {
             throw DomainException.badRequest(
                     ErrorCode.VALIDATION_ERROR, "Title is required");
         }
+        if (title.trim().length() > MAX_TITLE_LENGTH) {
+            throw DomainException.badRequest(ErrorCode.GESCHICHTE_TITLE_TOO_LONG,
+                    "Title exceeds maximum length of " + MAX_TITLE_LENGTH + " characters");
+        }
     }
 
     /**
@@ -214,7 +227,14 @@ public class GeschichteService {
      * corrupt content ("&" → "&amp;") and re-encode on every editor round-trip.
      */
     private String bodyForType(GeschichteType type, String body) {
-        return type == GeschichteType.JOURNEY ? body : sanitize(body);
+        if (type != GeschichteType.JOURNEY) {
+            return sanitize(body);
+        }
+        if (body != null && body.length() > MAX_INTRO_LENGTH) {
+            throw DomainException.badRequest(ErrorCode.GESCHICHTE_INTRO_TOO_LONG,
+                    "Intro exceeds maximum length of " + MAX_INTRO_LENGTH + " characters");
+        }
+        return body;
     }
 
     private String sanitize(String body) {
diff --git a/backend/src/main/resources/db/migration/V75__geschichten_journey_intro_length.sql b/backend/src/main/resources/db/migration/V75__geschichten_journey_intro_length.sql
new file mode 100644
index 00000000..3444a78f
--- /dev/null
+++ b/backend/src/main/resources/db/migration/V75__geschichten_journey_intro_length.sql
@@ -0,0 +1,16 @@
+-- JOURNEY intros travel the verbatim (unsanitized) write path and get the same
+-- three-layer bound as journey notes: frontend maxlength, the
+-- GeschichteService.MAX_INTRO_LENGTH check, and this CHECK as the atomic backstop.
+-- STORY bodies are sanitized Tiptap HTML and stay unbounded on purpose.
+--
+-- The title needs no CHECK here — VARCHAR(255) (V58) already bounds it at the
+-- DB layer; the service-level check exists to turn that 500 into a friendly 400.
+
+-- Defensive clamp first: intros written before this migration may exceed the
+-- cap. No-op on a clean database.
+UPDATE geschichten SET body = left(body, 4000)
+    WHERE type = 'JOURNEY' AND length(body) > 4000;
+
+ALTER TABLE geschichten
+    ADD CONSTRAINT chk_geschichte_journey_intro_length
+        CHECK (type <> 'JOURNEY' OR body IS NULL OR length(body) <= 4000);
diff --git a/backend/src/test/java/org/raddatz/familienarchiv/geschichte/GeschichteConstraintsTest.java b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/GeschichteConstraintsTest.java
new file mode 100644
index 00000000..ff0baa60
--- /dev/null
+++ b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/GeschichteConstraintsTest.java
@@ -0,0 +1,66 @@
+package org.raddatz.familienarchiv.geschichte;
+
+import org.junit.jupiter.api.Test;
+import org.raddatz.familienarchiv.PostgresContainerConfig;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.context.annotation.Import;
+import org.springframework.dao.DataIntegrityViolationException;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.bean.override.mockito.MockitoBean;
+import software.amazon.awssdk.services.s3.S3Client;
+
+import java.util.UUID;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+/**
+ * Raw-SQL constraint tests for geschichten — deliberately NOT @Transactional at
+ * class level (see JourneyItemConstraintsTest for the rationale).
+ *
+ * The V75 CHECK is the atomic backstop for GeschichteService.MAX_INTRO_LENGTH on
+ * the verbatim JOURNEY intro write path. STORY bodies are intentionally exempt.
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.NONE)
+@ActiveProfiles("test")
+@Import(PostgresContainerConfig.class)
+class GeschichteConstraintsTest {
+
+    @MockitoBean
+    S3Client s3Client;
+
+    @Autowired JdbcTemplate jdbcTemplate;
+
+    private UUID insertGeschichte(String type, String body) {
+        UUID id = UUID.randomUUID();
+        jdbcTemplate.update(
+                "INSERT INTO geschichten (id, title, body, status, type, created_at, updated_at) "
+                        + "VALUES (?, ?, ?, 'DRAFT', ?, now(), now())",
+                id, "Constraints-Test", body, type);
+        return id;
+    }
+
+    @Test
+    void journey_intro_check_rejects_4001_chars() {
+        assertThatThrownBy(() -> insertGeschichte("JOURNEY", "x".repeat(4001)))
+                .isInstanceOf(DataIntegrityViolationException.class);
+    }
+
+    @Test
+    void journey_intro_check_accepts_exactly_4000_chars() {
+        UUID id = insertGeschichte("JOURNEY", "x".repeat(4000));
+        Integer count = jdbcTemplate.queryForObject(
+                "SELECT COUNT(*) FROM geschichten WHERE id = ?", Integer.class, id);
+        assertThat(count).isEqualTo(1);
+    }
+
+    @Test
+    void story_bodies_are_not_constrained_by_the_intro_check() {
+        UUID id = insertGeschichte("STORY", "<p>" + "x".repeat(4001) + "</p>");
+        Integer count = jdbcTemplate.queryForObject(
+                "SELECT COUNT(*) FROM geschichten WHERE id = ?", Integer.class, id);
+        assertThat(count).isEqualTo(1);
+    }
+}
diff --git a/backend/src/test/java/org/raddatz/familienarchiv/geschichte/GeschichteServiceTest.java b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/GeschichteServiceTest.java
index 37e00712..73693c27 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/geschichte/GeschichteServiceTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/GeschichteServiceTest.java
@@ -477,6 +477,114 @@ class GeschichteServiceTest {
         assertThat(saved.body()).doesNotContain("<script>").contains("<p>ok</p>");
     }
 
+    // ─── length caps ─────────────────────────────────────────────────────────
+
+    @Test
+    void create_rejects_title_longer_than_255_with_GESCHICHTE_TITLE_TOO_LONG() {
+        authenticateAs(writer, Permission.BLOG_WRITE);
+
+        GeschichteUpdateDTO dto = new GeschichteUpdateDTO();
+        dto.setTitle("x".repeat(256));
+
+        assertThatThrownBy(() -> geschichteService.create(dto))
+                .isInstanceOf(DomainException.class)
+                .extracting("code")
+                .isEqualTo(ErrorCode.GESCHICHTE_TITLE_TOO_LONG);
+    }
+
+    @Test
+    void create_accepts_title_of_exactly_255_chars() {
+        authenticateAs(writer, Permission.BLOG_WRITE);
+        when(userService.findByEmail(writer.getEmail())).thenReturn(writer);
+        when(geschichteRepository.save(any(Geschichte.class)))
+                .thenAnswer(inv -> inv.getArgument(0));
+
+        GeschichteUpdateDTO dto = new GeschichteUpdateDTO();
+        dto.setTitle("x".repeat(255));
+
+        assertThat(geschichteService.create(dto).title()).hasSize(255);
+    }
+
+    @Test
+    void update_rejects_title_longer_than_255_with_GESCHICHTE_TITLE_TOO_LONG() {
+        authenticateAs(writer, Permission.BLOG_WRITE);
+        UUID id = UUID.randomUUID();
+        when(geschichteRepository.findById(id)).thenReturn(Optional.of(draft(id)));
+
+        GeschichteUpdateDTO dto = new GeschichteUpdateDTO();
+        dto.setTitle("x".repeat(256));
+
+        assertThatThrownBy(() -> geschichteService.update(id, dto))
+                .isInstanceOf(DomainException.class)
+                .extracting("code")
+                .isEqualTo(ErrorCode.GESCHICHTE_TITLE_TOO_LONG);
+    }
+
+    @Test
+    void create_rejects_JOURNEY_intro_longer_than_4000_with_GESCHICHTE_INTRO_TOO_LONG() {
+        authenticateAs(writer, Permission.BLOG_WRITE);
+
+        GeschichteUpdateDTO dto = new GeschichteUpdateDTO();
+        dto.setTitle("Winterbriefe");
+        dto.setType(GeschichteType.JOURNEY);
+        dto.setBody("x".repeat(4001));
+
+        assertThatThrownBy(() -> geschichteService.create(dto))
+                .isInstanceOf(DomainException.class)
+                .extracting("code")
+                .isEqualTo(ErrorCode.GESCHICHTE_INTRO_TOO_LONG);
+    }
+
+    @Test
+    void create_accepts_JOURNEY_intro_of_exactly_4000_chars() {
+        authenticateAs(writer, Permission.BLOG_WRITE);
+        when(userService.findByEmail(writer.getEmail())).thenReturn(writer);
+        when(geschichteRepository.save(any(Geschichte.class)))
+                .thenAnswer(inv -> inv.getArgument(0));
+
+        GeschichteUpdateDTO dto = new GeschichteUpdateDTO();
+        dto.setTitle("Winterbriefe");
+        dto.setType(GeschichteType.JOURNEY);
+        dto.setBody("x".repeat(4000));
+
+        assertThat(geschichteService.create(dto).body()).hasSize(4000);
+    }
+
+    @Test
+    void update_rejects_JOURNEY_intro_longer_than_4000_with_GESCHICHTE_INTRO_TOO_LONG() {
+        authenticateAs(writer, Permission.BLOG_WRITE);
+        UUID id = UUID.randomUUID();
+        Geschichte existing = draft(id);
+        existing.setType(GeschichteType.JOURNEY);
+        when(geschichteRepository.findById(id)).thenReturn(Optional.of(existing));
+
+        GeschichteUpdateDTO dto = new GeschichteUpdateDTO();
+        dto.setBody("x".repeat(4001));
+
+        assertThatThrownBy(() -> geschichteService.update(id, dto))
+                .isInstanceOf(DomainException.class)
+                .extracting("code")
+                .isEqualTo(ErrorCode.GESCHICHTE_INTRO_TOO_LONG);
+    }
+
+    @Test
+    void update_does_not_apply_the_intro_cap_to_STORY_bodies() {
+        // STORY bodies are sanitized Tiptap HTML and intentionally unbounded —
+        // the 4000-char cap exists for the verbatim JOURNEY intro path only.
+        authenticateAs(writer, Permission.BLOG_WRITE);
+        UUID id = UUID.randomUUID();
+        Geschichte existing = draft(id);
+        existing.setType(GeschichteType.STORY);
+        when(geschichteRepository.findById(id)).thenReturn(Optional.of(existing));
+        when(geschichteRepository.save(any(Geschichte.class)))
+                .thenAnswer(inv -> inv.getArgument(0));
+
+        GeschichteUpdateDTO dto = new GeschichteUpdateDTO();
+        dto.setBody("<p>" + "x".repeat(4001) + "</p>");
+
+        assertThat(geschichteService.update(id, dto).body()).contains("<p>");
+    }
+
     // ─── update ──────────────────────────────────────────────────────────────
 
     @Test
diff --git a/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemConstraintsTest.java b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemConstraintsTest.java
index 02284161..6ee3966a 100644
--- a/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemConstraintsTest.java
+++ b/backend/src/test/java/org/raddatz/familienarchiv/geschichte/journeyitem/JourneyItemConstraintsTest.java
@@ -128,6 +128,18 @@ class JourneyItemConstraintsTest {
                 .isInstanceOf(DataIntegrityViolationException.class);
     }
 
+    @Test
+    void note_length_check_accepts_exactly_2000_chars() {
+        // Pins the boundary at the DB layer too — a future <= vs < migration edit
+        // must fail here, not only in the mock-based service test.
+        jdbcTemplate.update(
+                "INSERT INTO journey_items (id, geschichte_id, position, note) VALUES (?, ?, ?, ?)",
+                UUID.randomUUID(), geschichteId, 10, "x".repeat(2000));
+        Integer count = jdbcTemplate.queryForObject(
+                "SELECT COUNT(*) FROM journey_items WHERE geschichte_id = ?", Integer.class, geschichteId);
+        assertThat(count).isEqualTo(1);
+    }
+
     @Test
     void position_check_rejects_nonpositive() {
         UUID itemId = UUID.randomUUID();
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 59acfab2..c1bf1d9e 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -61,7 +61,7 @@ Members of the cross-cutting layer have no entity of their own, no user-facing C
 | `audit` | Append-only event store (`audit_log`) for all domain mutations. Feeds the activity feed and Family Pulse dashboard. | Consumed by 5+ domains; no user-facing CRUD of its own |
 | `config` | Infrastructure bean definitions: `MinioConfig`, `AsyncConfig`, `WebConfig` | Framework infra; no business logic |
 | `dashboard` | Stats aggregation for the admin dashboard and Family Pulse widget | Aggregates from 3+ domains; no owned entities |
-| `exception` | `DomainException`, `ErrorCode` enum, `GlobalExceptionHandler` | Framework infra; consumed by every controller and service. Adding a new `ErrorCode` requires matching updates in `frontend/src/lib/shared/errors.ts` and all three `messages/*.json` locale files. Current security-related codes: `CSRF_TOKEN_MISSING` (403 on mutating request without valid `X-XSRF-TOKEN` header), `TOO_MANY_LOGIN_ATTEMPTS` (429 when login rate limit exceeded). Journey/geschichte domain codes: `JOURNEY_NOTE_TOO_LONG`, `JOURNEY_DOCUMENT_ALREADY_ADDED`, `GESCHICHTE_TYPE_IMMUTABLE`. |
+| `exception` | `DomainException`, `ErrorCode` enum, `GlobalExceptionHandler` | Framework infra; consumed by every controller and service. Adding a new `ErrorCode` requires matching updates in `frontend/src/lib/shared/errors.ts` and all three `messages/*.json` locale files. Current security-related codes: `CSRF_TOKEN_MISSING` (403 on mutating request without valid `X-XSRF-TOKEN` header), `TOO_MANY_LOGIN_ATTEMPTS` (429 when login rate limit exceeded). Journey/geschichte domain codes: `JOURNEY_NOTE_TOO_LONG`, `JOURNEY_DOCUMENT_ALREADY_ADDED`, `GESCHICHTE_TYPE_IMMUTABLE`, `GESCHICHTE_TITLE_TOO_LONG`, `GESCHICHTE_INTRO_TOO_LONG`. |
 | `filestorage` | `FileService` — MinIO/S3 upload, download, presigned-URL generation | Generic service; consumed by `document` and `ocr` |
 | `importing` | `CanonicalImportOrchestrator` — async canonical import running four idempotent loaders (`TagTreeImporter` → `PersonRegisterImporter` → `PersonTreeImporter` → `DocumentImporter`) over the normalizer's committed canonical artifacts (`canonical-*.xlsx` + `canonical-persons-tree.json`) | Orchestrates across `person`, `tag`, `document` |
 | `security` | `SecurityConfig`, `Permission` enum, `@RequirePermission` annotation, `PermissionAspect` (AOP) | Framework infra; enforced globally across all controllers |
diff --git a/docs/architecture/db/db-orm.puml b/docs/architecture/db/db-orm.puml
index 27cb0d38..c4bfa9a4 100644
--- a/docs/architecture/db/db-orm.puml
+++ b/docs/architecture/db/db-orm.puml
@@ -357,7 +357,7 @@ package "Supporting" {
     id : UUID <<PK>>
     --
     title : VARCHAR(255) NOT NULL
-    body : TEXT
+    body : TEXT CHECK (JOURNEY: length <= 4000)
     status : VARCHAR(32) NOT NULL
     type : VARCHAR(32) NOT NULL
     author_id : UUID <<FK>>
diff --git a/docs/architecture/db/db-relationships.puml b/docs/architecture/db/db-relationships.puml
index c610921e..2b70124f 100644
--- a/docs/architecture/db/db-relationships.puml
+++ b/docs/architecture/db/db-relationships.puml
@@ -132,5 +132,6 @@ geschichten_persons }o--|| persons : person_id
 journey_items }o--|| geschichten : geschichte_id (ON DELETE CASCADE)
 journey_items }o--o| documents : document_id (ON DELETE SET NULL)
 note right of journey_items : partial UNIQUE (geschichte_id, document_id)\nWHERE document_id IS NOT NULL (V74)
+note right of geschichten : CHECK length(body) <= 4000\nfor type = JOURNEY (V75)
 
 @enduml
diff --git a/frontend/messages/de.json b/frontend/messages/de.json
index eeac0b28..e1d7066f 100644
--- a/frontend/messages/de.json
+++ b/frontend/messages/de.json
@@ -1213,6 +1213,8 @@
 	"journey_publish_disabled_title": "Titel und mindestens ein Eintrag erforderlich",
 	"journey_save_hint_published": "Änderungen werden sofort für alle Leser sichtbar.",
 	"error_journey_note_too_long": "Die Notiz ist zu lang (maximal 2000 Zeichen).",
+	"error_geschichte_title_too_long": "Der Titel ist zu lang (maximal 255 Zeichen).",
+	"error_geschichte_intro_too_long": "Die Einleitung ist zu lang (maximal 4000 Zeichen).",
 	"error_journey_document_already_added": "Dieser Brief ist bereits in der Lesereise enthalten.",
 	"error_geschichte_type_immutable": "Der Typ einer Geschichte kann nach der Erstellung nicht mehr geändert werden."
 }
diff --git a/frontend/messages/en.json b/frontend/messages/en.json
index d701f22c..fb443602 100644
--- a/frontend/messages/en.json
+++ b/frontend/messages/en.json
@@ -1213,6 +1213,8 @@
 	"journey_publish_disabled_title": "Title and at least one entry required",
 	"journey_save_hint_published": "Changes will be immediately visible to all readers.",
 	"error_journey_note_too_long": "The note is too long (maximum 2000 characters).",
+	"error_geschichte_title_too_long": "The title is too long (maximum 255 characters).",
+	"error_geschichte_intro_too_long": "The introduction is too long (maximum 4000 characters).",
 	"error_journey_document_already_added": "This letter is already included in the reading journey.",
 	"error_geschichte_type_immutable": "The type of a story cannot be changed after creation."
 }
diff --git a/frontend/messages/es.json b/frontend/messages/es.json
index e183d14a..4056fbe0 100644
--- a/frontend/messages/es.json
+++ b/frontend/messages/es.json
@@ -1213,6 +1213,8 @@
 	"journey_publish_disabled_title": "Se requiere título y al menos una entrada",
 	"journey_save_hint_published": "Los cambios serán visibles inmediatamente para todos los lectores.",
 	"error_journey_note_too_long": "La nota es demasiado larga (máximo 2000 caracteres).",
+	"error_geschichte_title_too_long": "El título es demasiado largo (máximo 255 caracteres).",
+	"error_geschichte_intro_too_long": "La introducción es demasiado larga (máximo 4000 caracteres).",
 	"error_journey_document_already_added": "Esta carta ya está incluida en el viaje de lectura.",
 	"error_geschichte_type_immutable": "El tipo de una historia no se puede cambiar después de su creación."
 }
diff --git a/frontend/src/lib/shared/errors.ts b/frontend/src/lib/shared/errors.ts
index 3df6a49e..37125109 100644
--- a/frontend/src/lib/shared/errors.ts
+++ b/frontend/src/lib/shared/errors.ts
@@ -53,6 +53,8 @@ export type ErrorCode =
 	| 'JOURNEY_DOCUMENT_ALREADY_ADDED'
 	| 'GESCHICHTE_TYPE_MISMATCH'
 	| 'GESCHICHTE_TYPE_IMMUTABLE'
+	| 'GESCHICHTE_TITLE_TOO_LONG'
+	| 'GESCHICHTE_INTRO_TOO_LONG'
 	| 'INVALID_CREDENTIALS'
 	| 'SESSION_EXPIRED'
 	| 'MISSING_CREDENTIALS'
@@ -185,6 +187,10 @@ export function getErrorMessage(code: ErrorCode | string | undefined): string {
 			return m.error_geschichte_type_mismatch();
 		case 'GESCHICHTE_TYPE_IMMUTABLE':
 			return m.error_geschichte_type_immutable();
+		case 'GESCHICHTE_TITLE_TOO_LONG':
+			return m.error_geschichte_title_too_long();
+		case 'GESCHICHTE_INTRO_TOO_LONG':
+			return m.error_geschichte_intro_too_long();
 		case 'INVALID_CREDENTIALS':
 			return m.error_invalid_credentials();
 		case 'SESSION_EXPIRED':