DNZCP1530E: The user name is not valid.
Explanation:
Operator Response: A valid user name ranges from 1 to 20 in length and is made up of acceptable ASCII chars such as: letters ('a'-'z','A'-'Z'),digit(0-9) and doesn't catain the characters: '/', '\', '[', ']', ':', ';', '|','=', ',', '+', '*', '?', '<', '>'