If you have only a few duplicates, you can copy paste the ID's of the
duplicate records into excel or notepad and delete them from the table
manually.
If you get any messages about not being able to delete a record because
there are related records in another table, then you will have to delete the
related record first.
If you have hundreds of records to delete, you will need to build a delete
query. That may or may not be easy depending on the relationships between
the tables.
Jeanette Cunningham MS Access MVP -- Melbourne Victoria Australia