diff --git a/openmetadata-service/src/main/java/org/openmetadata/service/jdbi3/DataContractRepository.java b/openmetadata-service/src/main/java/org/openmetadata/service/jdbi3/DataContractRepository.java
index 2d3bbb858d5..f169d96df3b 100644
--- a/openmetadata-service/src/main/java/org/openmetadata/service/jdbi3/DataContractRepository.java
+++ b/openmetadata-service/src/main/java/org/openmetadata/service/jdbi3/DataContractRepository.java
@@ -136,6 +136,8 @@ public class DataContractRepository extends EntityRepository<DataContract> {
 
     if (!update) {
       validateEntityReference(entityRef);
+      dataContract.setCreatedAt(dataContract.getUpdatedAt());
+      dataContract.setCreatedBy(dataContract.getUpdatedBy());
     }
 
     // Validate schema fields and throw exception if there are failures
@@ -936,6 +938,9 @@ public class DataContractRepository extends EntityRepository<DataContract> {
       updateSchema(original, updated);
       updateQualityExpectations(original, updated);
       updateSemantics(original, updated);
+      // Preserve immutable creation fields
+      updated.setCreatedAt(original.getCreatedAt());
+      updated.setCreatedBy(original.getCreatedBy());
     }
 
     private void updateSchema(DataContract original, DataContract updated) {
@@ -1048,8 +1053,8 @@ public class DataContractRepository extends EntityRepository<DataContract> {
         .withId(original.getId())
         .withName(original.getName())
         .withFullyQualifiedName(original.getFullyQualifiedName())
-        .withUpdatedAt(original.getUpdatedAt())
-        .withUpdatedBy(original.getUpdatedBy());
+        .withCreatedAt(original.getCreatedAt())
+        .withCreatedBy(original.getCreatedBy());
   }
 
   private void validateEntityReference(EntityReference entity) {
diff --git a/openmetadata-service/src/test/java/org/openmetadata/service/resources/data/DataContractResourceTest.java b/openmetadata-service/src/test/java/org/openmetadata/service/resources/data/DataContractResourceTest.java
index 6cf3ba75213..a820028011a 100644
--- a/openmetadata-service/src/test/java/org/openmetadata/service/resources/data/DataContractResourceTest.java
+++ b/openmetadata-service/src/test/java/org/openmetadata/service/resources/data/DataContractResourceTest.java
@@ -1757,6 +1757,138 @@ public class DataContractResourceTest extends EntityResourceTest<DataContract, C
     assertThrows(HttpResponseException.class, () -> getDataContract(created.getId(), null));
   }
 
+  @Test
+  @Execution(ExecutionMode.CONCURRENT)
+  void testCreatedByAndCreatedAtFieldsOnCreation(TestInfo test) throws IOException {
+    Table table = createUniqueTable(test.getDisplayName());
+    CreateDataContract create = createDataContractRequest(test.getDisplayName(), table);
+    long beforeCreation = System.currentTimeMillis();
+
+    DataContract created = createDataContract(create);
+
+    long afterCreation = System.currentTimeMillis();
+
+    // Verify createdAt is set and within reasonable bounds
+    assertNotNull(created.getCreatedAt());
+    assertTrue(created.getCreatedAt() >= beforeCreation);
+    assertTrue(created.getCreatedAt() <= afterCreation);
+
+    // Verify createdBy is always set
+    assertNotNull(created.getCreatedBy());
+    assertEquals("admin", created.getCreatedBy());
+
+    // Get with fields parameter to ensure fields are persisted
+    DataContract retrieved = getDataContract(created.getId(), "createdBy,createdAt");
+    assertNotNull(retrieved.getCreatedAt());
+    assertNotNull(retrieved.getCreatedBy());
+    assertEquals(created.getCreatedAt(), retrieved.getCreatedAt());
+    assertEquals(created.getCreatedBy(), retrieved.getCreatedBy());
+  }
+
+  @Test
+  @Execution(ExecutionMode.CONCURRENT)
+  void testCreatedByAndCreatedAtPreservedOnUpdate(TestInfo test) throws IOException {
+    Table table = createUniqueTable(test.getDisplayName());
+    CreateDataContract create = createDataContractRequest(test.getDisplayName(), table);
+    DataContract created = createDataContract(create);
+
+    // Store original creation metadata
+    Long originalCreatedAt = created.getCreatedAt();
+    String originalCreatedBy = created.getCreatedBy();
+
+    // Update the contract
+    create.withEntityStatus(EntityStatus.APPROVED).withDescription("Updated description");
+    DataContract updated = updateDataContract(create);
+
+    // Verify creation fields are preserved
+    assertNotNull(updated.getCreatedAt());
+    assertNotNull(updated.getCreatedBy());
+    assertEquals(originalCreatedAt, updated.getCreatedAt());
+    assertEquals(originalCreatedBy, updated.getCreatedBy());
+
+    // Verify updatedAt exists
+    assertNotNull(updated.getUpdatedAt());
+  }
+
+  @Test
+  @Execution(ExecutionMode.CONCURRENT)
+  void testCreatedByAndCreatedAtPreservedOnPatch(TestInfo test) throws IOException {
+    Table table = createUniqueTable(test.getDisplayName());
+    CreateDataContract create = createDataContractRequest(test.getDisplayName(), table);
+    DataContract created = createDataContract(create);
+
+    String originalJson = JsonUtils.pojoToJson(created);
+
+    // Store original creation metadata
+    Long originalCreatedAt = created.getCreatedAt();
+    String originalCreatedBy = created.getCreatedBy();
+
+    // Apply patch
+    created.setEntityStatus(EntityStatus.APPROVED);
+    created.setDescription("Patched description");
+
+    DataContract patched = patchDataContract(created.getId(), originalJson, created);
+
+    // Verify creation fields are preserved
+    assertEquals(originalCreatedAt, patched.getCreatedAt());
+    assertEquals(originalCreatedBy, patched.getCreatedBy());
+
+    // Verify the patch was applied
+    assertEquals(EntityStatus.APPROVED, patched.getEntityStatus());
+    assertEquals("Patched description", patched.getDescription());
+
+    // Verify updatedAt is different from createdAt (updatedAt should be newer or equal)
+    assertNotNull(patched.getUpdatedAt());
+    assertTrue(patched.getUpdatedAt() >= patched.getCreatedAt());
+  }
+
+  @Test
+  @Execution(ExecutionMode.CONCURRENT)
+  void testCreatedByAndCreatedAtInGetByEntityId(TestInfo test) throws IOException {
+    Table table = createUniqueTable(test.getDisplayName());
+    CreateDataContract create = createDataContractRequest(test.getDisplayName(), table);
+    DataContract created = createDataContract(create);
+
+    // Get by entity ID with fields parameter
+    DataContract retrieved =
+        getDataContractByEntityId(
+            table.getId(), org.openmetadata.service.Entity.TABLE, "createdBy,createdAt");
+
+    // Verify creation fields are returned
+    assertNotNull(retrieved.getCreatedAt());
+    assertNotNull(retrieved.getCreatedBy());
+    assertEquals(created.getCreatedAt(), retrieved.getCreatedAt());
+    assertEquals(created.getCreatedBy(), retrieved.getCreatedBy());
+
+    // Get by entity ID without fields parameter should still return creation fields (they're audit
+    // fields)
+    DataContract retrievedNoFields =
+        getDataContractByEntityId(table.getId(), org.openmetadata.service.Entity.TABLE);
+    assertNotNull(retrievedNoFields.getCreatedBy());
+    assertNotNull(retrievedNoFields.getCreatedAt());
+  }
+
+  @Test
+  @Execution(ExecutionMode.CONCURRENT)
+  void testCreatedByAndCreatedAtInGetByName(TestInfo test) throws IOException {
+    Table table = createUniqueTable(test.getDisplayName());
+    CreateDataContract create = createDataContractRequest(test.getDisplayName(), table);
+    DataContract created = createDataContract(create);
+
+    // Get by name with fields parameter
+    DataContract retrieved =
+        getDataContractByName(created.getFullyQualifiedName(), "createdBy,createdAt");
+
+    // Verify creation fields are returned
+    assertNotNull(retrieved.getCreatedAt());
+    assertEquals(created.getCreatedAt(), retrieved.getCreatedAt());
+
+    // createdBy should always be set
+    assertNotNull(created.getCreatedBy());
+    assertNotNull(retrieved.getCreatedBy());
+    assertEquals(created.getCreatedBy(), retrieved.getCreatedBy());
+  }
+
   // ===================== Business Logic Tests =====================
 
   @Test
diff --git a/openmetadata-spec/src/main/resources/json/schema/entity/data/dataContract.json b/openmetadata-spec/src/main/resources/json/schema/entity/data/dataContract.json
index 072f0032b0d..4a021902196 100644
--- a/openmetadata-spec/src/main/resources/json/schema/entity/data/dataContract.json
+++ b/openmetadata-spec/src/main/resources/json/schema/entity/data/dataContract.json
@@ -202,6 +202,14 @@
       "description": "User who made the update.",
       "type": "string"
     },
+    "createdAt": {
+      "description": "Timestamp in Unix epoch time milliseconds corresponding to when the data contract was created.",
+      "$ref": "../../type/basic.json#/definitions/timestamp"
+    },
+    "createdBy": {
+      "description": "User or Bot who created the data contract.",
+      "type": "string"
+    },
     "href": {
       "description": "Link to this data contract resource.",
       "$ref": "../../type/basic.json#/definitions/href"
diff --git a/openmetadata-ui/src/main/resources/ui/src/generated/api/events/createNotificationTemplate.ts b/openmetadata-ui/src/main/resources/ui/src/generated/api/events/createNotificationTemplate.ts
new file mode 100644
index 00000000000..bb6f8e4176c
--- /dev/null
+++ b/openmetadata-ui/src/main/resources/ui/src/generated/api/events/createNotificationTemplate.ts
@@ -0,0 +1,98 @@
+/*
+ *  Copyright 2025 Collate.
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+/**
+ * Create request for Notification Template
+ */
+export interface CreateNotificationTemplate {
+    /**
+     * Description of this notification template
+     */
+    description?: string;
+    /**
+     * Display name for this notification template
+     */
+    displayName?: string;
+    /**
+     * Fully qualified names of the domains the template belongs to
+     */
+    domains?: string[];
+    /**
+     * Name that uniquely identifies this notification template (e.g., 'entity_change',
+     * 'test_change')
+     */
+    name: string;
+    /**
+     * Owners of this template
+     */
+    owners?: EntityReference[];
+    /**
+     * Handlebars template content for rendering notifications
+     */
+    templateBody: string;
+}
+
+/**
+ * Owners of this template
+ *
+ * This schema defines the EntityReferenceList type used for referencing an entity.
+ * EntityReference is used for capturing relationships from one entity to another. For
+ * example, a table has an attribute called database of type EntityReference that captures
+ * the relationship of a table `belongs to a` database.
+ *
+ * This schema defines the EntityReference type used for referencing an entity.
+ * EntityReference is used for capturing relationships from one entity to another. For
+ * example, a table has an attribute called database of type EntityReference that captures
+ * the relationship of a table `belongs to a` database.
+ */
+export interface EntityReference {
+    /**
+     * If true the entity referred to has been soft-deleted.
+     */
+    deleted?: boolean;
+    /**
+     * Optional description of entity.
+     */
+    description?: string;
+    /**
+     * Display Name that identifies this entity.
+     */
+    displayName?: string;
+    /**
+     * Fully qualified name of the entity instance. For entities such as tables, databases
+     * fullyQualifiedName is returned in this field. For entities that don't have name hierarchy
+     * such as `user` and `team` this will be same as the `name` field.
+     */
+    fullyQualifiedName?: string;
+    /**
+     * Link to the entity resource.
+     */
+    href?: string;
+    /**
+     * Unique identifier that identifies an entity instance.
+     */
+    id: string;
+    /**
+     * If true the relationship indicated by this entity reference is inherited from the parent
+     * entity.
+     */
+    inherited?: boolean;
+    /**
+     * Name of the entity instance.
+     */
+    name?: string;
+    /**
+     * Entity type/class name - Examples: `database`, `table`, `metrics`, `databaseService`,
+     * `dashboardService`...
+     */
+    type: string;
+}
diff --git a/openmetadata-ui/src/main/resources/ui/src/generated/entity/data/dataContract.ts b/openmetadata-ui/src/main/resources/ui/src/generated/entity/data/dataContract.ts
index 81c31e8db7c..c9a3ab9c000 100644
--- a/openmetadata-ui/src/main/resources/ui/src/generated/entity/data/dataContract.ts
+++ b/openmetadata-ui/src/main/resources/ui/src/generated/entity/data/dataContract.ts
@@ -22,6 +22,15 @@ export interface DataContract {
      * History of updates to the data contract.
      */
     contractUpdates?: ContractUpdate[];
+    /**
+     * Timestamp in Unix epoch time milliseconds corresponding to when the data contract was
+     * created.
+     */
+    createdAt?: number;
+    /**
+     * User or Bot who created the data contract.
+     */
+    createdBy?: string;
     /**
      * When `true` indicates the entity has been soft deleted.
      */
diff --git a/openmetadata-ui/src/main/resources/ui/src/generated/entity/events/notificationTemplate.ts b/openmetadata-ui/src/main/resources/ui/src/generated/entity/events/notificationTemplate.ts
new file mode 100644
index 00000000000..2d1d73ae653
--- /dev/null
+++ b/openmetadata-ui/src/main/resources/ui/src/generated/entity/events/notificationTemplate.ts
@@ -0,0 +1,158 @@
+/*
+ *  Copyright 2025 Collate.
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+/**
+ * A NotificationTemplate defines the default formatting template for notifications of a
+ * specific entity type.
+ */
+export interface NotificationTemplate {
+    /**
+     * Change that lead to this version of the template.
+     */
+    changeDescription?: ChangeDescription;
+    /**
+     * When `true` indicates the template has been soft deleted.
+     */
+    deleted?: boolean;
+    /**
+     * Description of the template purpose and usage.
+     */
+    description?: string;
+    /**
+     * Display Name that identifies this template.
+     */
+    displayName?: string;
+    /**
+     * Fully qualified name for the template.
+     */
+    fullyQualifiedName?: string;
+    /**
+     * Link to this template resource.
+     */
+    href?: string;
+    /**
+     * Unique identifier of this template instance.
+     */
+    id: string;
+    /**
+     * Change that lead to this version of the entity.
+     */
+    incrementalChangeDescription?: ChangeDescription;
+    /**
+     * Name for the notification template (e.g., 'Default Table Template', 'Custom Pipeline
+     * Alerts').
+     */
+    name: string;
+    /**
+     * Provider of the template. System templates are pre-loaded and cannot be deleted. User
+     * templates are created by users and can be deleted.
+     */
+    provider?: ProviderType;
+    /**
+     * Handlebars HTML template body with placeholders.
+     */
+    templateBody: string;
+    /**
+     * Last update time corresponding to the new version of the template.
+     */
+    updatedAt?: number;
+    /**
+     * User who made the update.
+     */
+    updatedBy?: string;
+    /**
+     * Metadata version of the template.
+     */
+    version?: number;
+}
+
+/**
+ * Change that lead to this version of the template.
+ *
+ * Description of the change.
+ *
+ * Change that lead to this version of the entity.
+ */
+export interface ChangeDescription {
+    changeSummary?: { [key: string]: ChangeSummary };
+    /**
+     * Names of fields added during the version changes.
+     */
+    fieldsAdded?: FieldChange[];
+    /**
+     * Fields deleted during the version changes with old value before deleted.
+     */
+    fieldsDeleted?: FieldChange[];
+    /**
+     * Fields modified during the version changes with old and new values.
+     */
+    fieldsUpdated?: FieldChange[];
+    /**
+     * When a change did not result in change, this could be same as the current version.
+     */
+    previousVersion?: number;
+}
+
+export interface ChangeSummary {
+    changedAt?: number;
+    /**
+     * Name of the user or bot who made this change
+     */
+    changedBy?:    string;
+    changeSource?: ChangeSource;
+    [property: string]: any;
+}
+
+/**
+ * The source of the change. This will change based on the context of the change (example:
+ * manual vs programmatic)
+ */
+export enum ChangeSource {
+    Automated = "Automated",
+    Derived = "Derived",
+    Ingested = "Ingested",
+    Manual = "Manual",
+    Propagated = "Propagated",
+    Suggested = "Suggested",
+}
+
+export interface FieldChange {
+    /**
+     * Name of the entity field that changed.
+     */
+    name?: string;
+    /**
+     * New value of the field. Note that this is a JSON string and use the corresponding field
+     * type to deserialize it.
+     */
+    newValue?: any;
+    /**
+     * Previous value of the field. Note that this is a JSON string and use the corresponding
+     * field type to deserialize it.
+     */
+    oldValue?: any;
+}
+
+/**
+ * Provider of the template. System templates are pre-loaded and cannot be deleted. User
+ * templates are created by users and can be deleted.
+ *
+ * Type of provider of an entity. Some entities are provided by the `system`. Some are
+ * entities created and provided by the `user`. Typically `system` provide entities can't be
+ * deleted and can only be disabled. Some apps such as AutoPilot create entities with
+ * `automation` provider type. These entities can be deleted by the user.
+ */
+export enum ProviderType {
+    Automation = "automation",
+    System = "system",
+    User = "user",
+}