diff --git a/schemas/IndicatorSet.yaml b/schemas/IndicatorSet.yaml
index 8c80ad6..065d52a 100644
--- a/schemas/IndicatorSet.yaml
+++ b/schemas/IndicatorSet.yaml
@@ -32,7 +32,6 @@ properties:
     maximum: 1.0
   bars:
     description: Describes the bars in the indicators used in the indicatorGroups.
-    schema:
     type: array
     items:
       type: object
diff --git a/schemas/dateTimeZ.yaml b/schemas/dateTimeZ.yaml
new file mode 100644
index 0000000..1de5916
--- /dev/null
+++ b/schemas/dateTimeZ.yaml
@@ -0,0 +1,4 @@
+description: Timestamp in complete basic representation of date and time according ISO 8601.
+type: string
+format: datetime
+example: "19700131T235901Z"