Usually this error come out after several compile and runs.
First time when you run it is always fine. But if you do several compile and run from id you get this error on second, third maximum fourth time. After that if you close project and reopen it all is fine
` D:\BDS\DelphiXE10\Apha Controls\AlphaDB\AlphaDBDX10Sydney.dpk(40,1): error E2200: E2200 Package ‘AlphaDBDX10Sydney’ already contains unit ‘sDBEdit’
D:\BDS\DelphiXE10\Apha Controls\AlphaDB\AlphaDBDX10Sydney.dpk(42,1): error E2200: E2200 Package ‘AlphaDBDX10Sydney’ already contains unit ‘sDBLookupComboBox’
D:\BDS\DelphiXE10\Apha Controls\AlphaDB\AlphaDBDX10Sydney.dpk(43,1): error E2200: E2200 Package ‘AlphaDBDX10Sydney’ already contains unit ‘sDBComboBox’
D:\BDS\DelphiXE10\Apha Controls\AlphaDB\AlphaDBDX10Sydney.dpk(47,1): error E2200: E2200 Package ‘AlphaDBDX10Sydney’ already contains unit ‘sDBCheckBox’
D:\BDS\DelphiXE10\Apha Controls\AlphaDB\AlphaDBDX10Sydney.dpk(51,1): error E2200: E2200 Package ‘AlphaDBDX10Sydney’ already contains unit ‘sDBRadioGroup’
D:\BDS\DelphiXE10\Apha Controls\AlphaDB\AlphaDBDX10Sydney.dpk(56,1): error E2200: E2200 Package ‘AlphaDBDX10Sydney’ already contains unit ‘acDBDecimalSpinEdit’
D:\BDS\DelphiXE10\Apha Controls\AlphaDB\AlphaDBDX10Sydney.dpk(57,1): error E2200: E2200 Package ‘AlphaDBDX10Sydney’ already contains unit ‘acDBComboBoxEx’
c:\program files (x86)\embarcadero\studio\21.0\Bin\CodeGear.Delphi.Targets(402,5): error F2220: F2220 Could not compile package ‘AlphaDBDX10Sydney’
Done building target “_PasCoreCompile” in project “Moonshine.dproj” — FAILED.
Done building project “Moonshine.dproj” — FAILED.
Build FAILED.`