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Delphi Error - E2218 Published method '%s' contains an unpublishable type - Developer Publish

Delphi Error – E2218 Published method ‘%s’ contains an unpublishable type

Delphi Compiler Error

E2218 Published method ‘%s’ contains an unpublishable type

Reason for the Error & Solution

The message applies only to Win32 compilations, where it indicates that a parameter or function result type in the method is not a publishable type.