I have tried a number of scenarios to duplicate this error.
If you submit a text document to the XmlReceive pipeline
If you submit a UTF-16 doument without the Byte Order Mark
Have you looked at the suspended message.
In Group Hub – query for suspended message
Select the service instance -> right click -> Show Messages
Select the message -> Message Details
Select Body
Do you get this error:
[quote:d62e1b8c5f]The textual representation of the data may not be accurate in this view. Use the binary tab to view the raw data. [/quote:d62e1b8c5f]
Select the Binary tab and ensure the BOM, character encoding and Xml encoding definition are all in sync.