To start off, I have confirmed several times that migrating manually (using the web interface) works fine for the client/domain I am trying to migrate. However as I now want to automate the process I have been coding against the XML API to start the migration. I have basically generated a packet much like the Request samples and here's what I am sending (anonimized): In this case the destination server is running Plesk 9.5.4 on Ubuntu and the source server is Plesk 8 on FreeBSD. The response the destination server gives is: I have extensively looked at the documentation and example, and obviously googled the error code/message. I cannot seem to find any options that would allow me to set any method of authentication. Is anyone able to shed some light on what I am missing here? Thank you.