I have the following sub form with combo boxes on Wire Type - linked for Description and LeadSleeve - Linked for Diameter and Colour.
The problem I have is sometime I have rows witch do not require these fields to have a value from the ComboBox. i.e. Null Value.
I get the message. "The Microsoft Access Database engine cannot find a record in the table 'tblwire' with a key matching field(s) 'fldWdgWire.
How do I get passed this error message?