Updated notification tag maxOccurs, as system allow multiple notification per service
diff --git a/framework/service/dtd/services.xsd b/framework/service/dtd/services.xsd
index 7620381..e7e90b4 100644
--- a/framework/service/dtd/services.xsd
+++ b/framework/service/dtd/services.xsd
@@ -41,7 +41,7 @@
                 <xs:element minOccurs="0" ref="description"/>
                 <xs:element minOccurs="0" ref="namespace"/>
                 <xs:element minOccurs="0" maxOccurs="1" ref="deprecated"/>
-                <xs:element minOccurs="0" ref="notification"/>
+                <xs:element minOccurs="0" maxOccurs="unbounded" ref="notification"/>
                 <xs:element minOccurs="0" maxOccurs="1" ref="permission-service"/>
                 <xs:element minOccurs="0" maxOccurs="unbounded" ref="required-permissions"/>
                 <xs:element minOccurs="0" maxOccurs="unbounded" ref="implements"/>