The DbiTypes, DbiProcs, DbiErrs units are aliased to the "BDE" unit, as declared under the IDE's main menu for Projects->Options->Directories/Conditionals->Unit Aliases. The source code for the DBE unit is located in Delphi's "doc" directory, and is named "BDE.INT". In this file, you will find that there is a constant named ABORT that has a declared value of -2. Since you want to use the procedure Abort() that is located in the SysUtils unit, you will need to fully qualify your call to the abort procedure by prefixing the name of the SysUtils unit to the Abort procedure. Example: SysUtils.Abort;