BizTalk: Problem parsing Multipart Message returned from Web Service

Question

I have an orchestration that calls a web service. The web service returns 2 arrays. One with log details and one with error messages.

I want to write those two to a file. I have tried different methods. But they all end up with

Exception thrown from: segment -1, progress -1 Inner exception: The XLANG/s message has no part at index '2'. The total number of parts found in the message is '2'. If you expect a multipart message, check that the pipeline supports multipart messages such as MIME.

I can not construct the web service´s return message in a Message Assignment. I guess what I have left is to do something in the message assignment control.

Any ideas?

Answer 1

Many adapters don't really know how to deal with multi-part message.

You could always try an N-to-1 map that generates a new message with a single part and send that to the file adapter instead.

Alternatively, you could write a custom pipeline component that would generate a new single-part message out of the multi-part message you are sending.