When using admin console to create xa-datasource "_" is not allowed in xa datasource properties

URL=jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=xxx.xxx.xx)(PORT=1521))(CONNECT_DATA=(SERVER=dedicated)(SERVICE_NAME=xxxx)))

Invalid format. Add new properties as key=value pairs, the special character allowed in the value are: - . : @ ; = ? ! # $ % & [ ]

Although "(,),*":have been added to list as part of HAL-1670,"_"is still not added to the list which could be part of schema,xa-datasource property etc.