diff --git a/src/app/zap-templates/zcl/data-model/chip/time-synchronization-cluster.xml b/src/app/zap-templates/zcl/data-model/chip/time-synchronization-cluster.xml
index c3c6ca2a2bfdb4..29ed6a0d1f2048 100644
--- a/src/app/zap-templates/zcl/data-model/chip/time-synchronization-cluster.xml
+++ b/src/app/zap-templates/zcl/data-model/chip/time-synchronization-cluster.xml
@@ -104,7 +104,8 @@ limitations under the License.
     <client init="false" tick="false">true</client>
     <server init="false" tick="false">true</server>
     <description>Accurate time is required for a number of reasons, including scheduling, display and validating security materials.</description>
-    <!-- Base data types -->
+    <globalAttribute side="either" code="0xFFFD" value="2"/>
+
     <attribute side="server" code="0x0000" define="UTC_TIME" type="epoch_us" isNullable="true" optional="false">UTCTime</attribute>
     <attribute side="server" code="0x0001" define="GRANULARITY" type="GranularityEnum" default="0x00" optional="false">Granularity</attribute>
     <attribute side="server" code="0x0002" define="TIME_SOURCE" type="TimeSourceEnum" default="0x00" optional="true">TimeSource</attribute>