diff --git a/src/main/resources/wsdl/OSCI_MessageMetaData_V2.02.xsd b/src/main/resources/wsdl/OSCI_MessageMetaData_V2.02.xsd
index 989ebeaf686fd9f68cc8f5f642fb987969554009..b5eb092f0233ebcf52d19423fcf4da72a6e8f718 100644
--- a/src/main/resources/wsdl/OSCI_MessageMetaData_V2.02.xsd
+++ b/src/main/resources/wsdl/OSCI_MessageMetaData_V2.02.xsd
@@ -139,7 +139,7 @@
     </xs:annotation>
     <xs:simpleContent>
       <xs:extension base="xs:normalizedString">
-        <xs:attribute name="type" type="oscimeta:NonEmptyStringType" use="required">
+        <xs:attribute name="type" type="oscimeta:NonEmptyStringType">
           <xs:annotation>
             <xs:documentation>Orientation: ebMS Core: type, how to interpret Party-Id value, e.g.: xöv oder Justiz</xs:documentation>
           </xs:annotation>