Location of XLSSC 102 on the scaling relation between the spherically integrated Compton parameter Y₅₀₀ and the hydrostatic mass M_HSE, 500 (i.e. the total mass assuming b_HSE = 0). The different markers indicate the values from the combined SZ+X-ray analysis of XLSSC 102 evaluated on the entire cluster at different centres and from the southern and northern regions at the X-ray centre, as indicated in the legend. The values and error bars represent the median and the 68% c.i. The black data points show the Planck calibration cluster sample corrected from Malmquist bias. The blue line and region indicate the fitted relation and its intrinsic scatter (Planck XX).