Subforms causing problem

[wannabepro]

I have this master form, under this main form there are 3 subforms, each subform is created from the same table as the main form; however, now the problem is that these subform are datasheet mode, I want to add as many field as i want to. But, one of the subform's entry is suppose to be automatically entered on the other subform. It works fine if entry is entered once, on the second entry it tells me I can not add duplicate data, I have changed my primary key so I could add duplicate data. But this problem remains. I am not sure how exactly I am suppose to solve this issue. As I have created 3 diff tables and created the subforms in the main form but its not working. I would appreciate any kind of feed back to resolve this issue.

Thanx