... (which is in good agreement with the statement of the Russian Ministry of Defense that the strike was delivered from a distance of 45 km).
Tochka-U cannot maneuver and flies along a ballistic trajectory. If the missile was not shot down by missile defense (and the missile from Kramatorsk was not shot down by missile defense), then by the relative position of the tail and the epicenter of the impact, it is possible to determine with an accuracy of 10-15 degrees from which direction the missile flew. In combination with the information from the previous paragraph, it is possible to determine quite accurately where the rocket was launched from, and this is not Shakhtyorsk.
... you just do not understand the issue and let's leave it to those who understand....
I see. Well, since you do not feel you need to prove anything that you say, I guess it would be futile to ask you if you have any proof other than the statement from an interested party (a Russian Ministery) and the "magister dixit" argument (other people know more, so you are wrong).
You see, you have used a medieval argument without even know that existed. I hope that makes your reflect on your way of thinking.
magister dixit "the teacher has said it" - Canonical medieval reference to Aristotle, precluding further discussion
https://en.wikipedia.org/wiki/List_of_Latin_phrases_(M)#:~:text=magister%20dixit,to%20Aristotle%2C%20precluding%20further%20discussion