Abundance ratios [HDCO]/[H₂CO] (upper panel), and [D₂CO]/[H₂CO] (lower panel) estimated in prestellar cores (Chacón-Tanarro et al. 2019; Bacmann et al. 2003), in Class 0 (Parise et al. 2006; Watanabe et al. 2012; Persson et al. 2018; Manigand et al. 2020; Evans et al. 2023) and Class I (Bianchi et al. 2017; Mercimek et al. 2022) protostars, and in disks (van der Marel et al. 2021; Brunken et al. 2022), are compared with the values estimated in the disk of IRS 63 (this work). Blue and red circles indicate estimates obtained with IRAM-30m observations (with the exception of RCrA-IRS7B which is observed with ASTE-10m), while cyan and orange squares those obtained with ALMA. Upper limits are marked with triangles. In both panels the right y-axes indicate the corresponding [D]/[H] ratios. The source names are below the bottom panel.