>I can easily reproduce this problem without a form.
>
>Steps to reproduce error:
>1) Open table with primary index and set buffering to 5 (Optimistic Table)
>2) APPEND BLANK
>3) Go to appended record and fill with valid values (unique key)
>4) Use up arrow to go to previous record.
>5) Return to new record.
>6) Blank out one of the fields that are part of the primary key.
>7) Re-enter the same value you just removed.
>8) Go to another record. Wham! Error!
>
>Why??? The record seems to be conflicting with itself!
>
>Elyse

You should use TABLE BUFFERING... :)