"Argument Exception: targetVolumesToCreate" when Configuring a Migration Job

During the configuration of a migration job, "Argument Exception: targetVolumesToCreate" error is thrown. This error is usually caused by having multiple entries for the same mount point and same FSUUID. An example is shown below.

  <q1:volume>

          <q1:id>5a6eb1d0-481d-4e02-9a2f-54c6fc3ce8e6</q1:id>

          <q1:fileSystem>EXT3</q1:fileSystem>

          <q1:size>52840493056</q1:size>

          <q1:freeSpace>49967661056</q1:freeSpace>

          <q1:label />

          <q1:fsuuid>5a6eb1d0-481d-4e02-9a2f-54c6fc3ce8e6</q1:fsuuid>

          <q1:mountPoints>/app/domains/logs</q1:mountPoints>

          <q1:partitions>/dev/cloudvg/app_domains_logs</q1:partitions>

          <q1:isDynamic>false</q1:isDynamic>

          <q1:isCompressed>false</q1:isCompressed>

          <q1:NTFSBootSector xsi:nil="true" />

          <q1:vssParticipant>false</q1:vssParticipant>

        </q1:volume>

        <q1:volume>

          <q1:id>5a6eb1d0-481d-4e02-9a2f-54c6fc3ce8e6</q1:id>

          <q1:fileSystem>EXT3</q1:fileSystem>

          <q1:size>52840493056</q1:size>

          <q1:freeSpace>49967661056</q1:freeSpace>

          <q1:label />

          <q1:fsuuid>5a6eb1d0-481d-4e02-9a2f-54c6fc3ce8e6</q1:fsuuid>

          <q1:mountPoints>/app/domains/logs</q1:mountPoints>

          <q1:partitions>/dev/cloudvg/app_domains_logs</q1:partitions>

          <q1:isDynamic>false</q1:isDynamic>

          <q1:isCompressed>false</q1:isCompressed>

          <q1:NTFSBootSector xsi:nil="true" />

          <q1:vssParticipant>false</q1:vssParticipant>

        </q1:volume>

To workaround this issue, kindly refer to the troubleshooting steps below.

- Locate this directory on your Migrate Server: C:\Program Files\PlateSpin Migrate Server\bin

- Inside this directory, search for PlateSpin.Browser.exe and run it as an administrator

- A new window will be opened then proceed on clicking the "Connect" button

- Once you are connected expand "https://localhost/PlateSpinMigrate" > "Networks" > "Default" > "Machines"

- Right click on the problematic server found under "Machines" then choose "View Source"

- Copy the contents of the XML file on a separate notepad

- Remove the duplicate entry from the volume section and keep only one entry for the mountpoint then save it as an XML file

- Open Migrate Client then delete the problematic source workload

- After the workload is deleted, click on "File" > "Import Machines" then import the modified XML file

- Once imported, please configure the job and see if the issue is resolved