Error while inserting or updating

I am inserting or updating 5 values to only one table, in which 3 columns are Primary+Foreign key (PK+FK). One column is PK, One is Independent. I am getting an error in UI . Foreign Key Constraint. But all My 3 values are coming from their particular table (where PK is mentioned) and what should be the $th Primary key? it should be updated of inserted?

[B]Question asked by visitor shyam[/b]

please post your question clearly .
Kindly post the exact error message that you are getting along with your table structure and the code that you are trying to execute fro refeence of experts of the forum.