Instead of having your user open the Why? dialog box to find out why a validation occurred, you can place the validation error message on your forms in addition to linking it in the validation dialog. This is easy to do if your Field validation is done with an Abacus.
Place the validation Abacus (above) in a Data rectange on your entry form Template. Attach the validation Abacus to the Field you wish to validate by double-clicking the Field icon, pressing the "Validate..." button and selecting the validation Abacus.
The validation error message will now appear on the form as well as on the Why? dialog when the Field contains an invalid entry.