Delphi Error – E2224 $DESIGNONLY and $RUNONLY only allowed in package unit

Delphi Compiler Error

E2224 $DESIGNONLY and $RUNONLY only allowed in package unit

Reason for the Error & Solution

The compiler has encountered either $designonly or $runonly in a source file which is not a package. These directives affect the way that the IDE will treat a package file, and therefore can only be contained in package source files.