diff --git a/server/src/test/java/org/opensearch/gateway/remote/ClusterMetadataManifestTests.java b/server/src/test/java/org/opensearch/gateway/remote/ClusterMetadataManifestTests.java
index d1d9137c36853..21876acdffe38 100644
--- a/server/src/test/java/org/opensearch/gateway/remote/ClusterMetadataManifestTests.java
+++ b/server/src/test/java/org/opensearch/gateway/remote/ClusterMetadataManifestTests.java
@@ -36,7 +36,7 @@ public void testClusterMetadataManifestXContent() throws IOException {
             Version.CURRENT,
             "test-node-id",
             false,
-            1,
+            ClusterMetadataManifest.CODEC_V0,
             null,
             Collections.singletonList(uploadedIndexMetadata),
             "prev-cluster-uuid",
@@ -53,7 +53,7 @@ public void testClusterMetadataManifestXContent() throws IOException {
         }
     }
 
-    public void testClusterMetadataManifestXContentCodecV2() throws IOException {
+    public void testClusterMetadataManifestXContentCodecV1() throws IOException {
         UploadedIndexMetadata uploadedIndexMetadata = new UploadedIndexMetadata("test-index", "test-uuid", "/test/upload/path");
         ClusterMetadataManifest originalManifest = new ClusterMetadataManifest(
             1L,
@@ -63,7 +63,7 @@ public void testClusterMetadataManifestXContentCodecV2() throws IOException {
             Version.CURRENT,
             "test-node-id",
             false,
-            2,
+            ClusterMetadataManifest.CODEC_V1,
             "test-global-metadata-file",
             Collections.singletonList(uploadedIndexMetadata),
             "prev-cluster-uuid",
@@ -75,7 +75,7 @@ public void testClusterMetadataManifestXContentCodecV2() throws IOException {
         builder.endObject();
 
         try (XContentParser parser = createParser(JsonXContent.jsonXContent, BytesReference.bytes(builder))) {
-            final ClusterMetadataManifest fromXContentManifest = ClusterMetadataManifest.fromXContentV2(parser);
+            final ClusterMetadataManifest fromXContentManifest = ClusterMetadataManifest.fromXContentV1(parser);
             assertEquals(originalManifest, fromXContentManifest);
         }
     }
diff --git a/server/src/test/java/org/opensearch/gateway/remote/RemoteClusterStateServiceTests.java b/server/src/test/java/org/opensearch/gateway/remote/RemoteClusterStateServiceTests.java
index b5f72d204d361..57ea73ba9619c 100644
--- a/server/src/test/java/org/opensearch/gateway/remote/RemoteClusterStateServiceTests.java
+++ b/server/src/test/java/org/opensearch/gateway/remote/RemoteClusterStateServiceTests.java
@@ -386,9 +386,9 @@ public void testMigrationFromCodecV0ManifestToCodecV1Manifest() throws IOExcepti
         Metadata newMetadata = Metadata.builder(previousClusterState.metadata()).put(indexMetadata, true).build();
         ClusterState newClusterState = ClusterState.builder(previousClusterState).metadata(newMetadata).build();
 
-        // previous manifest with codec 1 and null global metadata
+        // previous manifest with codec 0 and null global metadata
         final ClusterMetadataManifest previousManifest = ClusterMetadataManifest.builder()
-            .codecVersion(1)
+            .codecVersion(ClusterMetadataManifest.CODEC_V0)
             .globalMetadataFileName(null)
             .indices(Collections.emptyList())
             .build();
@@ -402,8 +402,8 @@ public void testMigrationFromCodecV0ManifestToCodecV1Manifest() throws IOExcepti
 
         // global metadata is updated
         assertThat(manifestAfterUpdate.getGlobalMetadataFileName(), notNullValue());
-        // Manifest file with codec version with 2 is updated.
-        assertThat(manifestAfterUpdate.getCodecVersion(), is(2));
+        // Manifest file with codec version with 1 is updated.
+        assertThat(manifestAfterUpdate.getCodecVersion(), is(ClusterMetadataManifest.CODEC_V1));
     }
 
     public void testWriteIncrementalGlobalMetadataSuccess() throws IOException {
@@ -626,8 +626,7 @@ public void testReadLatestMetadataManifestSuccessButNoIndexMetadata() throws IOE
             .nodeId("nodeA")
             .opensearchVersion(VersionUtils.randomOpenSearchVersion(random()))
             .previousClusterUUID("prev-cluster-uuid")
-            .globalMetadataFileName("global-metadata-file")
-            .codecVersion(1)
+            .codecVersion(ClusterMetadataManifest.CODEC_V0)
             .build();
 
         BlobContainer blobContainer = mockBlobStoreObjects();
@@ -684,8 +683,7 @@ public void testReadLatestMetadataManifestSuccess() throws IOException {
             .clusterUUID("cluster-uuid")
             .nodeId("nodeA")
             .opensearchVersion(VersionUtils.randomOpenSearchVersion(random()))
-            .globalMetadataFileName("global-metadata")
-            .codecVersion(1)
+            .codecVersion(ClusterMetadataManifest.CODEC_V0)
             .previousClusterUUID("prev-cluster-uuid")
             .build();
 
@@ -732,8 +730,7 @@ public void testReadLatestIndexMetadataSuccess() throws IOException {
             .nodeId("nodeA")
             .opensearchVersion(VersionUtils.randomOpenSearchVersion(random()))
             .previousClusterUUID("prev-cluster-uuid")
-            .globalMetadataFileName("global-metadata")
-            .codecVersion(1)
+            .codecVersion(ClusterMetadataManifest.CODEC_V0)
             .build();
 
         mockBlobContainer(mockBlobStoreObjects(), expectedManifest, Map.of(index.getUUID(), indexMetadata));