WHMCS Provisioning - Module Command Error: easy-web.name/free/: Is not a valid domain name, alphanum

Hello,

WHMCS Multisite Provisioning.

In WHMCS when I will activate a pending order I get this ERROR "free.easy-web.name: Is not a valid domain name, alphanumeric and "-" only:".

Is it because it is a .name - more then 3 letters?? I have seen this with my .asia domain before....

Looking forward to your replay.

Regards
Carsten