I dare you ! print this STL in the front left corner,
AND same stl, in front right corner,
Then see if both parts fits perfectly on top of each other.
The pictures explain the issue.
Double check each side is exactly 200 mm, that will normally be the case,
the long side will be too long or too short depending on your Y or X problem
perfect if you measure 271.53mm as shown.
write on 3D print, before you remove it, Take pictures,
so you know for sure, how each part was orientated in the printer,
this way it is much easier to find the problem and to fix it.