Scattering lengths of $\rm K^{+}d$: Lednick\'{y}--Lyuboshits fit obtained in this study (red marker), available theoretical calculations (blue marker) provided with the FCA  with the KN scattering lengths from Ref.  and effective range fit (ER)  to the cross section predictions at threshold anchored to the scattering data . The full box and line correspond to systematic and statistical uncertainties of the ALICE measurement, respectively.