yyy: (...) I’m not talking about "create an IP".

What is the meaning of "create"?

YYY: In the word itself, there is nothing like that. But to create an individual entrepreneur (IP) can only Mom and Dad. And an adult (already created) can register as such. In the people also say "Open/Close" IP.
"Create an IP", you can probably say, but it’s not too common, something like "give birth to LLC" or "push up the PJ".