When trying to sync the device, some users will receive the error message "Unable to parse request XML".
This is typically related to a connection issue. What happens is, when the connection times out, the response is validated as proper XML, thus creating the error message. You can continue to capture data on the device but wait to sync until you are in an area with a strong WiFi connection. One of the great benefits of iFormbuilder is that it will allow you to capture data and store it locally while in remote areas without a WiFi connection, and then upload the data at a later time when the connection is strong.