E2073 Label already defined '%s' (Delphi)
Go Up to Error and Warning Messages (Delphi)
This error message is given when a label is set on more than one statement.
program Produce; label 1; begin 1: goto 1; 1 (*<-- Error message here*) end.
The example just tries to set label 1 twice.
program Solve; label 1; begin 1: goto 1; end.
Make sure every label is set exactly once.