[AccessD] A2K: Stop User from oving to new record

   Hello all

 I have a simple subform with 4 fields on it
ID (PK),  txtDateOfOccurence, cboClientName, cboOffence

How can I tell if the user goes to a new record and they have not completed ALL fields in the previous record
How do I alert them and then direct them back to the previous record?

many thanks

Darren