DNZCP2152E: The specified user name is incorrect.

Explanation: A valid user name ranges from 1 to 20 in length and is made up of acceptable ASCII chars such as: \n letters ('a'-'z','A'-'Z'),digit(0-9) and the characters: \n '/', '\\', '[', ']', ':', ';', '|','=', ',', '+', '*', '?', '<', '>'.