diff --git a/datamodel/odata-v4/odata-v4-api-sample/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/sample/SdkGroceryStoreServiceTest.java b/datamodel/odata-v4/odata-v4-api-sample/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/sample/SdkGroceryStoreServiceTest.java
index 4198794c7..b084845b6 100644
--- a/datamodel/odata-v4/odata-v4-api-sample/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/sample/SdkGroceryStoreServiceTest.java
+++ b/datamodel/odata-v4/odata-v4-api-sample/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/sample/SdkGroceryStoreServiceTest.java
@@ -7,7 +7,6 @@
 import java.time.OffsetDateTime;
 import java.time.ZoneOffset;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 
 import org.junit.jupiter.api.BeforeEach;
@@ -116,15 +115,17 @@ void testFilterPurchaseHistory()
                 .build();
 
         final Customer customer = Customer.builder().id(1337).build();
+        customer.setVersionIdentifier("123");
+
         final ActionResponseCollection<PurchaseHistoryItem> historyItems =
             service
                 .forEntity(customer)
                 .applyAction(
                     Customer
                         .filterPurchaseHistory(
-                            Collections.singleton(Receipt.builder().customerId(1337).id(4242).build()),
-                            Arrays.asList("milk", "eggs"),
-                            Arrays.asList(ProductCategory.DAIRY, ProductCategory.MEAT),
+                            List.of(Receipt.builder().customerId(1337).id(4242).build()),
+                            List.of("milk", "eggs"),
+                            List.of(ProductCategory.DAIRY, ProductCategory.MEAT),
                             dateRange))
                 .execute(destination);
 
diff --git a/datamodel/odata-v4/odata-v4-api-sample/src/test/resources/SdkGroceryStoreServiceTest/mappings/SdkGroceryStoreServiceTest.json b/datamodel/odata-v4/odata-v4-api-sample/src/test/resources/SdkGroceryStoreServiceTest/mappings/SdkGroceryStoreServiceTest.json
index 28584daad..0145f3bc0 100644
--- a/datamodel/odata-v4/odata-v4-api-sample/src/test/resources/SdkGroceryStoreServiceTest/mappings/SdkGroceryStoreServiceTest.json
+++ b/datamodel/odata-v4/odata-v4-api-sample/src/test/resources/SdkGroceryStoreServiceTest/mappings/SdkGroceryStoreServiceTest.json
@@ -208,6 +208,9 @@
           "Content-Type": {
             "equalTo": "application/json"
           },
+          "If-Match": {
+            "equalTo": "123"
+          },
           "Accept": {
             "equalTo": "application/json"
           },
diff --git a/datamodel/odata-v4/odata-v4-core/src/main/java/com/sap/cloud/sdk/datamodel/odatav4/core/ServiceWithNavigableEntitiesImpl.java b/datamodel/odata-v4/odata-v4-core/src/main/java/com/sap/cloud/sdk/datamodel/odatav4/core/ServiceWithNavigableEntitiesImpl.java
index 3e356d324..7437a82d6 100644
--- a/datamodel/odata-v4/odata-v4-core/src/main/java/com/sap/cloud/sdk/datamodel/odatav4/core/ServiceWithNavigableEntitiesImpl.java
+++ b/datamodel/odata-v4/odata-v4-core/src/main/java/com/sap/cloud/sdk/datamodel/odatav4/core/ServiceWithNavigableEntitiesImpl.java
@@ -2,6 +2,8 @@
 
 import javax.annotation.Nonnull;
 
+import org.apache.http.HttpHeaders;
+
 import com.sap.cloud.sdk.datamodel.odata.client.expression.ODataResourcePath;
 
 import io.vavr.control.Option;
@@ -124,10 +126,10 @@ public <ResultT> SingleValueActionRequestBuilder<ResultT> applyAction(
                     action.getReturnType());
             maybeEntity
                 .filter(e -> e.getVersionIdentifier().isDefined())
-                .map(VdmEntity<EntityT>::getVersionIdentifier)
+                .map(VdmEntity::getVersionIdentifier)
                 .filter(Option::isDefined)
                 .map(Option::get)
-                .forEach(eTag -> requestBuilder.withHeader("ETag", eTag));
+                .forEach(eTag -> requestBuilder.withHeader(HttpHeaders.IF_MATCH, eTag));
             return requestBuilder;
         }
 
@@ -145,10 +147,10 @@ public <ResultT> CollectionValueActionRequestBuilder<ResultT> applyAction(
                     action.getReturnType());
             maybeEntity
                 .filter(e -> e.getVersionIdentifier().isDefined())
-                .map(VdmEntity<EntityT>::getVersionIdentifier)
+                .map(VdmEntity::getVersionIdentifier)
                 .filter(Option::isDefined)
                 .map(Option::get)
-                .forEach(eTag -> requestBuilder.withHeader("ETag", eTag));
+                .forEach(eTag -> requestBuilder.withHeader(HttpHeaders.IF_MATCH, eTag));
             return requestBuilder;
         }
     }
diff --git a/datamodel/odata-v4/odata-v4-core/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/core/BoundActionTest.java b/datamodel/odata-v4/odata-v4-core/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/core/BoundActionTest.java
index 0a4394e2b..9b1131288 100644
--- a/datamodel/odata-v4/odata-v4-core/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/core/BoundActionTest.java
+++ b/datamodel/odata-v4/odata-v4-core/src/test/java/com/sap/cloud/sdk/datamodel/odatav4/core/BoundActionTest.java
@@ -4,6 +4,7 @@
 
 import java.util.Collections;
 
+import org.apache.http.HttpHeaders;
 import org.junit.jupiter.api.Test;
 
 import com.sap.cloud.sdk.datamodel.odatav4.referenceservice.namespaces.trippin.Location;
@@ -25,7 +26,8 @@ void testActionOnEntityWithEtag()
 
         assertThat(action.toRequest().getRelativeUri()).hasToString(targetUrl);
         assertThat(action.toRequest().getActionParameters()).hasToString("{}");
-        assertThat(action.toRequest().getHeaders()).containsEntry("ETag", Collections.singletonList("some-etag"));
+        assertThat(action.toRequest().getHeaders())
+            .containsEntry(HttpHeaders.IF_MATCH, Collections.singletonList("some-etag"));
     }
 
     @Test
@@ -38,7 +40,7 @@ void testActionOnEntityNoEtag()
 
         assertThat(action.toRequest().getRelativeUri()).hasToString(targetUrl);
         assertThat(action.toRequest().getActionParameters()).hasToString("{}");
-        assertThat(action.toRequest().getHeaders()).doesNotContainEntry("ETag", Collections.singletonList("some-etag"));
+        assertThat(action.toRequest().getHeaders()).doesNotContainKey(HttpHeaders.IF_MATCH);
     }
 
     @Test
diff --git a/release_notes.md b/release_notes.md
index 6bd0c8098..6d660e735 100644
--- a/release_notes.md
+++ b/release_notes.md
@@ -23,6 +23,7 @@
 ### 🐛 Fixed Issues
 
 - [OpenAPI] Fix code generator for transitive dependency version inconsistencies for Jackson.
-- [ODatav4] Fixed an issue when generating clients.
+- [ODatav4] Fix incorrect HTTP header name when sending entity version identifier in bound-action requests.
+- [ODatav4] Fix an issue when generating clients.
   - Property names: `value`, `item` and `properties` are now allowed.