Thanks for your personal reaction. "En el español jurídico", I see in which Spain employs "escrito de personación", which I do not object to (Despite the fact that 'escrito' might have distinctive meanings, which I am going to deal with at the end of this article.) Nonetheless, I think "personación" https://pixbetentra23445.onzeblog.com/37910255/pixbet-sing-up-an-overview