<SimpleDisplayName of
the user> is not a valid value for SimpleDisplayName. The
value may only contain 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k',
'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y','z', 'A',
'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q',
'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '0', '1', '2', '3', '4','5', '6',
'7', '8', '9', '"', '(', ')', '+', ',', '-', '.', '/', ':', '?', ' '. It was
running the command 'move-mailbox -TargetDatabase '<Exchange
2007 server> \ <Storage Group
name> \ <Mailbox Database
name>''.
Note This error message resembles the error message that you receive when you move a mailbox in Exchange Management Console or run the Move-Mailbox command in Exchange Management Shell.