cmr-service-change.diff

diff --git a/indexer-app/src/cmr/indexer/data/elasticsearch.clj b/indexer-app/src/cmr/indexer/data/elasticsearch.clj
index c6483605e..a285edc37 100644
--- a/indexer-app/src/cmr/indexer/data/elasticsearch.clj
+++ b/indexer-app/src/cmr/indexer/data/elasticsearch.clj
@@ -51,6 +51,12 @@
          (:transaction-id concept)
          (map :transaction-id (:variable-associations concept))))
 
+(defmethod get-elastic-version :service
+ [concept]
+ (apply max
+        (:transaction-id concept)
+        (map :transaction-id (:service-associations concept))))
+
 (defmethod get-elastic-version :default
   [concept]
   (:revision-id concept))
diff --git a/search-app/src/cmr/search/data/elastic_results_to_query_results.clj b/search-app/src/cmr/search/data/elastic_results_to_query_results.clj
index 60ec38223..2e1828750 100644
--- a/search-app/src/cmr/search/data/elastic_results_to_query_results.clj
+++ b/search-app/src/cmr/search/data/elastic_results_to_query_results.clj
@@ -10,3 +10,7 @@
 (defmethod elastic-results/get-revision-id-from-elastic-result :variable
   [concept-type elastic-result]
   (first (get-in elastic-result [:fields :revision-id])))
+
+(defmethod elastic-results/get-revision-id-from-elastic-result :service
+  [concept-type elastic-result]
+  (first (get-in elastic-result [:fields :revision-id])))