diff --git a/103120/schema/xsd/ts_103120_Task.xsd b/103120/schema/xsd/ts_103120_Task.xsd
index cc4f8d0b7f3ec47bd6026d348213548f1cf28156..837d7eb8b3fee961c18205f38fb960f6e1aec0cb 100644
--- a/103120/schema/xsd/ts_103120_Task.xsd
+++ b/103120/schema/xsd/ts_103120_Task.xsd
@@ -226,7 +226,8 @@
     </xs:complexType>
     <xs:complexType name="ListOfTrafficPolicyReferences">
         <xs:sequence>
-            <xs:element name="TrafficPolicyReference" type="TrafficPolicyReference" maxOccurs="unbounded"/>
+            <!-- As of version 1.21.1 of the present document, this parameter is defined with minOccurs=0 -->
+            <xs:element name="TrafficPolicyReference" type="TrafficPolicyReference" minOccurs="0" maxOccurs="unbounded"/>
         </xs:sequence>
     </xs:complexType>
     <xs:complexType name="TrafficPolicyReference">