Using a trailer schema in a Flat File send pipeline

There was a failure executing pipeline “XYZ.Training.Lesson4.Pipelines.SendPaymentRecords”. Error details: “The document type “http://XYZ.Training.Lesson4.Schemas.PaymentRecordSummary#FooterRecord” does not match any of the given schemas. “.

Exception type: XLANGPipelineManagerException

Source: Microsoft.XLANGs.Pipeline

Target Site: Void ExecutePipeline(Microsoft.BizTalk.PipelineOM.SendPipeline, Microsoft.XLANGs.Pipeline.SendPipelineInputMessages, Microsoft.XLANGs.BaseTypes.XLANGMessage)

The following is a stack trace that identifies the location where the exception occured

at Microsoft.XLANGs.Pipeline.XLANGPipelineManager.ExecutePipeline(SendPipeline p, SendPipelineInputMessages inMessages, XLANGMessage outMsg)

at Microsoft.XLANGs.Pipeline.XLANGPipelineManager.ExecuteSendPipeline(Type sendPipelineType, SendPipelineInputMessages inMessages, XLANGMessage outXLANGMsg)

at G4S.Training.Lesson4.ProcessPayments.segment2(StopConditions stopOn)

at Microsoft.XLANGs.Core.SegmentScheduler.RunASegment(Segment s, StopConditions stopCond, Exception& exp)

Additional error information:

Exception type: XmlAsmException

Source: XML assembler

Target Site: Microsoft.BizTalk.Message.Interop.IBaseMessage Assemble(Microsoft.BizTalk.Component.Interop.IPipelineContext)

The following is a stack trace that identifies the location where the exception occured

at Microsoft.BizTalk.Component.XmlAsmComp.Assemble(IPipelineContext pc)

at Microsoft.BizTalk.Component.FFDocumentStream.AlignStream()

at Microsoft.BizTalk.Component.FFDocumentStream.ReadInternal(Byte[] buffer, Int32 offset, Int32 count)

at Microsoft.BizTalk.Streaming.EventingReadStream.Read(Byte[] buffer, Int32 offset, Int32 count)

at Microsoft.XLANGs.Pipeline.XLANGPipelineManager.ConvertStreamToVirtualStream(Stream inputStream)

at Microsoft.XLANGs.Pipeline.XLANGPipelineManager.WrapMessageWithVirtualStream(IBaseMessage msg)

at Microsoft.XLANGs.Pipeline.XLANGPipelineManager.ExecutePipeline(SendPipeline p, SendPipelineInputMessages inMessages, XLANGMessage outMsg)

// Add trailer (footer) summary details to pipeline

PipeLineInput.Add(PaymentSummary);

// Execute send pipeline to create a single flat file output

PaymentsOut = null;

Microsoft.XLANGs.Pipeline.XLANGPipelineManager.ExecuteSendPipeline(typeof(XYZ.Training.Lesson4.Pipelines.SendPaymentRecords), PipeLineInput, PaymentsOut);

 This works fine for adding messages of type Document schema but does not work adding messages of type Trailer schema.

 I can’t find any decent tutorials on using Trailer schemas to read and write flat files that contain a footer or summary record that must be constructed in an Orchestration?

Any help appreciated.

 Thanks.