For numerical inputs an absolute and a relative tolerance can be added.
for the absolute tolerance the upper bound 1 means the result + 1. this is confusing for the users, as it is expected to that the valid result is from the lower bound until the upper bound and not calculating the result minus or plus the lower/upper bound.
--> the entered number is the exact bound and no calculating
this is only valid for the absolute tolerance
the relative tolerance takes +/- 10% of the result.
For migration: the the shown number will be changed so the real number stands there