Don't use XMLTransmit on SOAP Ports

This one's short and simple: Don't use the XMLTransmit pipeline (or any other pipeline with an XML assembler) on the send side of a SOAP port.

The SOAP adapter receives the message to send in pieces, and knows how to assemble it. The XML assembler (which really only serves a few purposes, none of which are very important, and all of which are easy to achieve via other methods or workarounds) can get confused by these pieces and will fail.

Using the XMLReceive pipeline (or any pipeline with an XML disassembler) on the receive side of a SOAP port is fine, because the adapter has already delivered the full XML message.