TIBBackupService cannot be used in Delphi 10.4.1. It is affected by the EUAActive (isc_info_db_eua_active) function, which returns 1 even though it is not supported by Firebird. IBX is primarily for Interbase, but has worked with Firebird since Delphi 7 (as I remember). I solved the problem with Delphi support (https://quality.embarcadero.com/browse/RSP-31418) and there they claim that Firebird should return 0 in a function it does not support.
firebird-automations
commented
4 years ago
Submitted by: Pavel Třešňák (pavel.tresnak)
TIBBackupService cannot be used in Delphi 10.4.1. It is affected by the EUAActive (isc_info_db_eua_active) function, which returns 1 even though it is not supported by Firebird. IBX is primarily for Interbase, but has worked with Firebird since Delphi 7 (as I remember). I solved the problem with Delphi support (https://quality.embarcadero.com/browse/RSP-31418) and there they claim that Firebird should return 0 in a function it does not support.