Hello....trying to set up twinning on MiVB 8.0 SP3 PR2 on a 6930 phone. Have a Multi-Device User Group set up. Trying to put the X*XXX Twin extension on a button on the base phone as GROUP PRESENCE, X*XXX. I keep getting the error, "The directory number is of the wrong type". I've verified X*XXX is in the MDU Group. External Hot Desking Enabled is set to Yes.