Axis 1.3 parsing error on optional elements

My soap message contains 1 mandatory element and 3 optionals complexe type (minOccurs = 0):

<xs:element name="SetEndControlData">
<xs:complexType>
<xs:sequence>
<xs:element name="ControlResult" type="s0:ControlResultType">
</xs:element>
<xs:element minOccurs="0" maxOccurs="unbounded" name="DocumentsInformations" type="s0: DocumentsType">
</xs:element>
<xs:element minOccurs="0" name="Anomalies" type="s0:AnomaliesType">
</xs:element>
<xs:element minOccurs="0" name="FNT" type="s0:FNTType"/>
</xs:sequence>
</xs:complexType>
</xs:element>

When the two first optional element are missing, axis try to map the data of the last optional element with the first element (and then there is a parsing error)

Where is my mistake (in the xsd, in the parameters of Wsdl2java, in the configuration of the axis server) ?

Axis2 1.6.1 :ccool: