Server Error in '/' Application.

Multiple definition of element 'http://schemas.datacontract.org/2004/07/S1.Api.Domain.Models.Products:IsNotRetourable' causes the content model to become ambiguous. A content model must be formed such that during validation of an element information item sequence, the particle contained directly, indirectly or implicitly therein with which to attempt to validate each item in the sequence in turn can be uniquely determined without examining the content or attributes of that item, and without any information about the items in the remainder of the sequence.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Xml.Schema.XmlSchemaException: Multiple definition of element 'http://schemas.datacontract.org/2004/07/S1.Api.Domain.Models.Products:IsNotRetourable' causes the content model to become ambiguous. A content model must be formed such that during validation of an element information item sequence, the particle contained directly, indirectly or implicitly therein with which to attempt to validate each item in the sequence in turn can be uniquely determined without examining the content or attributes of that item, and without any information about the items in the remainder of the sequence.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[XmlSchemaException: Multiple definition of element 'http://schemas.datacontract.org/2004/07/S1.Api.Domain.Models.Products:IsNotRetourable' causes the content model to become ambiguous. A content model must be formed such that during validation of an element information item sequence, the particle contained directly, indirectly or implicitly therein with which to attempt to validate each item in the sequence in turn can be uniquely determined without examining the content or attributes of that item, and without any information about the items in the remainder of the sequence.]
   System.Xml.Schema.XmlSchemaSet.InternalValidationCallback(Object sender, ValidationEventArgs e) +25
   System.Xml.Schema.Compiler.CompileComplexContent(XmlSchemaComplexType complexType) +1359
   System.Xml.Schema.Compiler.CompileComplexType(XmlSchemaComplexType complexType) +1121
   System.Xml.Schema.Compiler.Compile() +712
   System.Xml.Schema.Compiler.Execute(XmlSchemaSet schemaSet, SchemaInfo schemaCompiledInfo) +24
   System.Xml.Schema.XmlSchemaSet.Compile() +563
   ServiceStack.WebHost.Endpoints.Utils.XsdUtils.GetXmlSchemaSet(ICollection`1 operationTypes) +57
   ServiceStack.WebHost.Endpoints.Metadata.BaseSoapMetadataHandler.ProcessRequest(IHttpRequest httpReq, IHttpResponse httpRes, String operationName) +308
   ServiceStack.WebHost.Endpoints.Support.HttpHandlerBase.ProcessRequest(HttpContext context) +47
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +872
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +220
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +94


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0