Field/relationship type wrong due to mouse released in wrong field in 2nd table.

Cause:


When dragging and dropping the field from the first to second table, the mouse button was released over the wrong field in the second related table. For a One-to-Many relationship, the primary field must be dropped onto a field with the same type of information.

Solution:


Change the field to the correct field in the 'Relationships' dialog box.

Do the following in the Relationships window:
NOTE: To open the Relationships window, select the 'Tools' menu and select 'Relationships'.
Relationships window