ID Problem (EIdNotSetException)

[wlandgraf (Wagner Landgraf)]

There is also the option to use IdUnsavedValue if having id=0 in database is absolutely necessary:

existing Identifier with zero value

Hi Kounalakis, Yes, it's possible, just add this mapping to Entities that have integer key fields where value may by zero: [IdUnsavedValue(-1)] TMyEntity = class You may use -1 or any other value (that will not exists as valid Id on your table) to represent unsaved entities. Regards,