GCN Circular 31223
D. B. Malesani (Radboud Univ. and DAWN/NBI) reports: The GRB 211211A E_iso value reported by Malesani et al. (GCN 31221) is incorrect. Using the Fermi GBM fluence 5.4*10^-4 erg cm^-2 (Mangan et al., GCN 31210), the corresponding E_iso value is 6.9*10^51 erg, assuming the GRB is at z = 0.076. The conclusion that GRB 211211A would not be consistent with the Amati relation if at z = 0.076 was based on the correct E_iso value, and still holds. This may indicate that the GRB lies in fact at a higher redshift. I sincerely apologize for any confusion caused by this mistake, and I am grateful to those who pointed it out, including Peter Veres, D. Alexander Kann, and Lorenzo Amati. No blame should be assigned to the other co-authors of GCN 31221, who saw an earlier draft which did not contain the mistake.