TITLE: GCN CIRCULAR NUMBER: 22523 SUBJECT: IBAS Alert n. 8033: Not a GRB DATE: 18/03/22 09:17:17 GMT FROM: Sandro Mereghetti at IASF-Milano/INAF S.Mereghetti (IASF-Milano), D.Gotz (CEA, Saclay), E.Bozzo, C.Ferrigno, (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: the IBAS alert n. 8033 was not due to a GRB. It was caused by the transient source MAXI J1820+070 not recognized due to slightly incorrect real-time attitude information. We apologize for the inconvenience.