How to add a domain with special characters

I am trying to add a domain that has one - but it is giving error and can not create, anyone know how to solve it?

CWP does not support the Special characters. You will have to convert through any punnycode generator.


You can use this https://www.verisign.com/en_US/channel-resources/domain-registry-products/idn/idn-conversion-tool/index.xhtml