Webservice to custom pipeline, no good

Hi. This is my first time to be posting in this forum and unfortunately, its to ask for assistance.

I have a webservice that receives a message from a client orchestration. From the webservice, the Biztalk orchestration gets the message through SOAP transport. The receive pipeline is the generic XMLReceive.

Next, I created a custom pipeline that has a component that adds a header into the received message. Using file drop, the message successfully passes the pipeline, the header is included, and received by the orchestration.

However, if the source is the webservice I get the following error:

[b:2817ed8e85]There was a failure executing the receive pipeline: \”CMSO.NTOP.Pipelines.ReceiveRequestPipeline\” Source: \”System.Xml\” Receive Location: \”/APSConnectors/NTOP/Net2PhoneServices.asmx\” Reason: There was an error generating the XML document.[/b:2817ed8e85]

I asked for help from a colleague and he told me to add this in the web.config:
[b:2817ed8e85]<system.diagnostics>
<switches>
<add name=\”XmlSerialization.Compilation\” value=\”4\” />
</switches>
</system.diagnostics>[/b:2817ed8e85]

This is supposed to leave the serialized class in the %TEMP% from what I read from the internet. For some unknown reason, I dont hit the error and the message passes the custom pipeline.

Now I wonder why the additional config item seems to fix the problem when its only supposed to keep the serialized class.

thats my dilemma. hope you guys could give better insights on this.

Thanks

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