Hi Support-Michael,
Thank you for your comment.
>No, include at least your identity. A certificate is all about identifying the owning/responsible party.
I filled to the input fields of Certificate including my name.
I could download the generated .zip file.
Then I requested a digital certificate (approved).
And I tried Ad Hoc distribution to my iphone(completed a distribution).
So, I was able to advance significantly the process to distribution.
But the installation was failed maybe with some other reason.
I think that is another topic. So, if you do not mind, please close this topic.
Thanks a lot,
ueda