You may receive an unhandled exception error message when you try to consume a BizTalk Web service in BizTalk Server 2004 (891386)

CAUSE

This problem occurs when the BizTalk Web Services Publishing Wizard uses the Web Services Description Language Tool (Wsdl.exe) to generate the client information. When you publish a schema that contains nested nodes that have the maxOccurs attribute set to the "unbounded" value, the Wsdl.exe tool creates multidimensional arrays in the generated datatypes.cs file. Therefore, the generated datatypes.cs file contains incorrect types for the nested nodes.

For example, in the generated datatypes.cs file, you notice generated data type declaration statements that are similar to the following.

...
public class yourSchema
    {
     
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute("TextValue")]
        public string[] TextValue;
        
        /// <remarks/>
        [System.Xml.Serialization.XmlElementAttribute("NumValue")]
        public string[] NumValue;
        
       ....
    }
....

Note In this example, the data types are incorrectly declared as multidimensional arrays.