This message appears when you attempt to enter a record with an already
existing primary in a table or register (To put it simply, keys are used to
uniquely distinguish records).
The following error message is returned in such a case:
The name of the field in the table which is used as a primary key and where
an error occurred is displayed in brackets.
Click
to close the window.
Solution:
Select an ID which does not exists in the register!