diff --git a/server/src/main/java/org/elasticsearch/index/IndexFeatures.java b/server/src/main/java/org/elasticsearch/index/IndexFeatures.java
index bf93e62357f20..f46a6d96f1a15 100644
--- a/server/src/main/java/org/elasticsearch/index/IndexFeatures.java
+++ b/server/src/main/java/org/elasticsearch/index/IndexFeatures.java
@@ -24,6 +24,8 @@ public Set<NodeFeature> getFeatures() {
 
     public static final NodeFeature LOGSDB_NO_HOST_NAME_FIELD = new NodeFeature("index.logsdb_no_host_name_field");
 
+    public static final NodeFeature TIME_SERIES_SYNTHETIC_ID = new NodeFeature("index.time_series_synthetic_id");
+
     private static final NodeFeature SYNONYMS_SET_LENIENT_ON_NON_EXISTING = new NodeFeature("index.synonyms_set_lenient_on_non_existing");
 
     private static final NodeFeature THROW_EXCEPTION_FOR_UNKNOWN_TOKEN_IN_REST_INDEX_PUT_ALIAS_ACTION = new NodeFeature(
@@ -46,6 +48,7 @@ public Set<NodeFeature> getFeatures() {
     public Set<NodeFeature> getTestFeatures() {
         return Set.of(
             LOGSDB_NO_HOST_NAME_FIELD,
+            TIME_SERIES_SYNTHETIC_ID,
             SYNONYMS_SET_LENIENT_ON_NON_EXISTING,
             THROW_EXCEPTION_FOR_UNKNOWN_TOKEN_IN_REST_INDEX_PUT_ALIAS_ACTION,
             THROW_EXCEPTION_ON_INDEX_CREATION_IF_UNSUPPORTED_VALUE_TYPE_IN_ALIAS,