Erro no Reporting Services

Ao fazer a chamada do relatório ocorre o erro:a abaixo:

System.Web.Services.Protocols.SoapException: The operation you are attempting on item "/Report_ProspCBancario/Report_prospCB" is not allowed for this item type. ---> Microsoft.ReportingServices.Diagnostics.Utilities.RSException: The operation you are attempting on item "/Report_ProspCBancario/Report_prospCB" is not allowed for this item type. ---> Microsoft.ReportingServices.Diagnostics.Utilities.WrongItemTypeException: The operation you are attempting on item "/Report_ProspCBancario/Report_prospCB" is not allowed for this item type. at Microsoft.ReportingServices.Library.RSService.EnsureItemType(ItemType actualType, ItemType expectedType1, ItemType expectedType2, String path) at Microsoft.ReportingServices.Library.RSService._GetReportParameterDefinitionFromC

atalog(CatalogItemContext reportContext, String historyID, Boolean forRendering, Guid& reportID, Int32& executionOption, String& savedParametersXml, ReportSnapshot& compiledDefinition, ReportSnapshot& snapshotData, Guid& linkID, DateTime& historyOrSnapshotDate, Byte[]& secDesc) at Microsoft.ReportingServices.Library.RSService._GetReportParameters(ClientRequest

session, String report, String historyID, Boolean forRendering, NameValueCollection values, DatasourceCredentialsCollection credentials) at Microsoft.ReportingServices.Library.RSService.RenderAsLiveOrSnapshot(CatalogItem

Context reportContext, ClientRequest session, Warning[]& warnings, ParameterInfoCollection& effectiveParameters) at Microsoft.ReportingServices.Library.RSService.RenderFirst(CatalogItemContext reportContext, ClientRequest session, Warning[]& warnings, ParameterInfoCollection& effectiveParameters, String[]& secondaryStreamNames) at Microsoft.ReportingServices.Library.RenderFirstCancelableStep.Execute() at Microsoft.ReportingServices.Diagnostics.CancelablePhaseBase.ExecuteWrapper() --- End of inner exception stack trace --- at Microsoft.ReportingServices.Diagnostics.CancelablePhaseBase.ExecuteWrapper() at Microsoft.ReportingServices.Library.RenderFirstCancelableStep.RenderFirst(RSServ

ice rs, CatalogItemContext reportContext, ClientRequest session, JobType type, Warning[]& warnings, ParameterInfoCollection& effectiveParameters, String[]& secondaryStreamNames) at Microsoft.ReportingServices.WebServer.ReportingService.Render(String Report, String Format, String HistoryID, String DeviceInfo, ParameterValue[] Parameters, DataSourceCredentials[] Credentials, String ShowHideToggle, Byte[]& Result, String& Encoding, String& MimeType, ParameterValue[]& ParametersUsed, Warning[]& Warnings, String[]& StreamIds) --- End of inner exception stack trace --- at Microsoft.ReportingServices.WebServer.ReportingService.Render(String Report, String Format, String HistoryID, String DeviceInfo, ParameterValue[] Parameters, DataSourceCredentials[] Credentials, String ShowHideToggle, Byte[]& Result, String& Encoding, String& MimeType, ParameterValue[]& ParametersUsed, Warning[]& Warnings, String[]& StreamIds)

abaixo a chamada da aplicação:

private void Page_Load(object sender, System.EventArgs e)

{

 string Seql_Prosp;

 

 Seql_Prosp = Session["Seql_Prospect"].ToString();

 

 if (Seql_Prosp == string.Empty)

 {

 Response.Write ("Não foi possivel gerar o relatório.!");

 

 }

 else

 {

 ServicePointManager.CertificatePolicy = new AcceptAllCertificatePolicy();

 

 cepheus.ReportingService rs = new cepheus.ReportingService();

 string xml = BaseXML.Documento.GetElementsByTagName("reporting_services")[0].InnerXml;

 

 string webservice_path = xml.Substring(xml.IndexOf("<webservice_path>"),(xml.LastIndexOf("</webservice_path>") - xml.LastIndexOf("<webservice_path>"))).Replace("<webservice_path>","").Replace("</webservice_path>","");

 rs.Url = webservice_path ;

 

 string encoding = "",mimetype = "";

 

 cepheus.ParameterValue[] parametersvaluesused = new cepheus.ParameterValue[0];

 cepheus.Warning[] warnings = new cepheus.Warning[0];

 string[] streamids = new string[0];

 cepheus.ParameterValue str = new cepheus.ParameterValue();

 str.Name = "Seql_Prosp";

 str.Value = Seql_Prosp;

 

 rs.Credentials = System.Net.CredentialCache.DefaultCredentials;

 string dados = BaseXML.Documento.GetElementsByTagName("reporting_services")[0].InnerXml;

 string user = dados.Substring(dados.IndexOf("<user>"),(dados.LastIndexOf("</user>") - dados.LastIndexOf("<user>"))).Replace("<user>","").Replace("</user>","");

 string pass = dados.Substring(dados.IndexOf("<pass>"),(dados.LastIndexOf("</pass>") - dados.LastIndexOf("<pass>"))).Replace("<pass>","").Replace("</pass>","");

 rs.Credentials = new System.Net.NetworkCredential(user, pass);

 

 cepheus.DataSourceCredentials cred = new cepheus.DataSourceCredentials();

 

 cred.DataSourceName = "CE_Corporativo"; //Nome do Data Source criado acima com o mesmo nome que estiver no report manager

 cred.Password = BaseXML.PegaBanco("corporativo").Senha;

 cred.UserName = BaseXML.PegaBanco("corporativo").Usuario;

 

 byte[] result;

 

 try

 {

 result = rs.Render(@"/Report_ProspCBancario/Report_prospCB","PDF",null,null,new cepheus.ParameterValue[]{str}, new cepheus.DataSourceCredentials[]{cred},"",out encoding,out mimetype, out parametersvaluesused,out warnings, out streamids);

 }

 catch(Exception ex)

 {

 throw new Exception(ex.Message);

 }

 

 for(int i = 0;i <result.Length;i++ )

 {

 Response.OutputStream.WriteByte(result*);*

}

}

}