Delphi Error – E2027 Duplicate tag value

Delphi Compiler Error

E2027 Duplicate tag value

Reason for the Error & Solution

This error message is given when a constant appears more than once in the declaration of a variant record.

program Produce;
type
  VariantRecord = record
    case Integer of
    0  (IntField: Integer);
    0  (RealField: Real);     (*<-- Error message here*)
  end;

begin
end.
	program Solve;
type
  VariantRecord = record
    case Integer of
    0  (IntField: Integer);
    1 (RealField: Real);
  end;

begin
end.