1.4.5 Display name containing characters other than single-byte alphanumeric characters
The J2EE servers use the display names set up for J2EE applications or resources (value of the <display-name> tag of DD) as identifiers. If the display name contains a character other than universal characters and single-byte alphanumeric characters (0 to 9, A to Z, and a to z), the character is converted to an underscore (_), and an identifier is generated. Depending on the set value, the identifier generated during the conversion might be repeated and the operation might fail. Do not use the characters other than single byte alphanumeric characters or underscores, in the display name.
If the display name contains characters other than single byte alphanumeric characters, the J2EE server outputs a warning message (KDJE42374-W).