Xsd:complexType with extension and unordered (sometimes not all) elements

Question

Hello, I have a schema definition that I need to change.
I have the following BASE (from which I extend) elements Entity and Record Info, and I have a Quote element that extends from entity.
Some times a Quote (title, context, quoted, written) will have all its elements and some times the user will not enter the [context] for example (as the quote maybe self explanatory),
so I am in need of a definition that will allow me that.
Also I have a User entity that is working fine, but when I run the JUnit test it changes the order of userName and userPassword and what happens is that it throws an error because it is expecting the order (userName then userPassword, and not userPassword firs, and userName second) is this possible to change also?
The ideal would be a Definition that will allow me unordered elements and some of the elements can be missing also, well now that I think about it I could just put the element with an empty string, but what could I do about the order?
I need some field like id and record info, but the rest, I really don't care if title is the first element or the last.
These are my schema parts I used to have sequence but I am trying with xsd:all but it crashes:
    <xsd:complexType name="entity">
        <xsd:sequence>
            <xsd:element name="synapseId" type="xsd:string"></xsd:element>
            <xsd:element name="recordInfo" type="tns:recordInformation" xmlns:tns="http://xml.fdt.com/Schemas/Cognoscere/mainRepository"></xsd:element>
        </xsd:sequence>
        <xsd:attribute name="id" type="xsd:string"/>
        <xsd:attribute name="languageCode" type="xsd:string"/>
        <xsd:attribute name="countryCode" type="xsd:string"/>
        <xsd:attribute name="regenerateAs" type="xsd:string" use="optional"/>
    </xsd:complexType>
    <xsd:complexType name="recordInformation">
        <xsd:sequence>
            <xsd:element name="createdBy" type="xsd:string"></xsd:element>
            <xsd:element name="createdDate" type="xsd:long"></xsd:element>
            <xsd:element name="modifiedBy" type="xsd:string"></xsd:element>
            <xsd:element name="modifiedDate" type="xsd:long"></xsd:element>
        </xsd:sequence>
    </xsd:complexType>
    <xsd:complexType name="quote">
        <xsd:complexContent>
            <xsd:extension base="tns:entity">
                <xsd:sequence>
                        <xsd:element name="title" type="xsd:string"></xsd:element>
                        <xsd:element name="context" type="xsd:string"></xsd:element>
                        <xsd:element name="preface" type="xsd:string"></xsd:element>
                        <xsd:element name="quoted" type="xsd:string"></xsd:element>
                        <xsd:element name="written" type="xsd:long"></xsd:element>
                </xsd:sequence>
            </xsd:extension>
        </xsd:complexContent>
    </xsd:complexType>by the way, when I tried with xsd:all minOccur etc, this is the error it threw:
s4s-elt-must-match.1: The content of 'sequence' must match (annotation?, (element | group | choice | sequence | any)*). A problem was found starting at: all. [58]
f(t)

Answer 1

sorry the error was
cos-all-limited.1.2: An all model group must appear in a particle with {min occurs} = {max occurs} = 1, and that particle must be part of a pair which constitutes the {content type} of a complex type definition.
not the other one.
I found it is working with choice. Is this ok?
<xsd:complexType name="quote">
        <xsd:complexContent>
            <xsd:extension base="tns:entity">
                <xsd:choice minOccurs="0" maxOccurs="unbounded">
                    <xsd:element name="title" type="xsd:string"></xsd:element>
                    <xsd:element name="context" type="xsd:string"></xsd:element>
                    <xsd:element name="preface" type="xsd:string"></xsd:element>
                    <xsd:element name="quoted" type="xsd:string"></xsd:element>
                    <xsd:element name="written" type="xsd:long"></xsd:element>
                </xsd:choice>
            </xsd:extension>
        </xsd:complexContent>
    </xsd:complexType>Doesn't look right to me, but my app is working, I would like to do it well not just have it working. (welcome to the nice happy and easy going place that is my mind) ;-)
f(t)