AX 4.0 Send GUID in AIF document

I’ve noticed a a bug in AX 4.0 (K/A: 4.0.2501.116) AIF implementation when using a table field type GUID. Unfortunately the generated XSD schema referred to the field type as Int64 instead of GUID. The sent XML of course contained an GUID String {00000000-1234-5678-9101-000000000000}. My C# .NET client reported an error because the received value was not a valid Int64.
I solved the problem by editing AxdBaseGenerateXSD.addGuid() method
protected void addGuid(
SysDictType dt,
XmlSchemaSimpleTypeRestriction restriction
/*  restriction.baseTypeName(
targetNameSpace)); */
restriction.baseTypeName (XmlQualifiedName::construct(
As result the generated XSD schema contained the correct GUID definition
<xs:simpleType name=”AxdExtType_MyGUID“>
<xs:documentation xml:lang=”DE-AT“>A Guid field</xs:documentation>
<xs:restriction base=”AxdType_GUID” />

<xs:simpleType name=”AxdType_GUID“>
<xs:restriction base=”xs:string“>
<xs:minLength value=”38” />
<xs:maxLength value=”38” />
value=”({[A-Fa-f0-9]{8}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{12}})” />

Connect a Windows Mobile Device with Dynamics AX

It’s easy to connect a mobile device like a smartphone with Dynamics AX using web services. This tutorial requires Microsoft Dynamics AX 2009 with AIF Webservices installed and Visual Studio for Smart Device development.

Deploy AIF Service

  1. Go to Basic → Setup → Application Integration Framework → Services
  2. Select Refresh button to update service list
  3. Enable CustCustomerService
  4. Generate the webservice

    Aif Services

    Aif Service

  5. To verify your service is working open the IIS manager
  6. Go to → Sites → Default Web Site  → MicrosoftDynamicsAxAif50  → Content View

    IIS 7 Manager on Windows Server 2008

    IIS 7 Manager on Windows Server 2008

  7. Right Click on CustomerSerivce.svc and Browser
  8. You should see a web page with a link to a WSDL file
  9. Follow the link an you should see an XML document containing the service contract

Implement Mobile Device Project

  1. Open Visual Studio and Create a new Solution
  2. Add a new Smart Device Project
  3. Go to References and add a new service reference
  4. Provide the URL of your Dynamics AX CustomerService
  5. Open Form1.cs file
  6. Add a text field (Name: textBoxAccountNum),
    a button (Name: buttonLookup)
    and a label (Name: labelName) to your form
  7. Double Click on the button and implement the service call:
private void buttonLookup_Click(object sender, EventArgs e)
    System.Net.NetworkCredential credentials = new System.Net.NetworkCredential();
    credentials.Domain = "YOUR_DOMAIN_NAME";
    credentials.UserName = "YOUR_USER_NAME";
    credentials.Password = "YOUR_USER_PASSWORD";

    QueryCriteria query = new QueryCriteria();
    query.CriteriaElement = new CriteriaElement[1];
    query.CriteriaElement[0] = new CriteriaElement();
    query.CriteriaElement[0].DataSourceName = "CustTable";
    query.CriteriaElement[0].FieldName = "AccountNum";
    query.CriteriaElement[0].Operator = Operator.Equal;
    query.CriteriaElement[0].Value1 = textBoxAccountNum.Text;

    CustomerService service = new CustomerService();
    service.Credentials = credentials;
        AxdCustomer customer = service.find(query);
        if (customer != null &&
            customer.CustTable != null &&
            customer.CustTable.Length > 0)
            labelName.Text = customer.CustTable[0].Name;
    catch (Exception ex)
        MessageBox.Show("Service Call failed",

You application should look like that:

Windows Mobile 5 Emulator

Windows Mobile 5 Emulator