diff --git a/source/includes/intro-start-api-example-intro.rst b/source/includes/intro-start-api-example-intro.rst
index 27f6e9202..344c9371d 100644
--- a/source/includes/intro-start-api-example-intro.rst
+++ b/source/includes/intro-start-api-example-intro.rst
@@ -1,3 +1,2 @@
-The following example starts a sync job between ``cluster0`` and
-``cluster1``.  The source cluster is ``cluster0`` and the destination
-cluster is ``cluster1``.
\ No newline at end of file
+The following example starts a sync job between the source cluster ``cluster0`` and the
+destination cluster ``cluster1``.
\ No newline at end of file
diff --git a/source/reference/api/start.txt b/source/reference/api/start.txt
index bdf973211..ed13320e4 100644
--- a/source/reference/api/start.txt
+++ b/source/reference/api/start.txt
@@ -365,6 +365,10 @@ Response:
 Start Sync from Replica Set to Sharded Cluster
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+The following example starts a sync job between the source replica set ``cluster0`` and the
+destination sharded cluster ``cluster1``. The ``key`` array in this example defines the shard key
+``{"location": 1, "region": 1 }``.
+
 Request:
 
 .. literalinclude:: /includes/api/requests/start-rs-shard.sh