The only way you can restrict the error is by dropping your Primary Key definitions on your columns and then you can insert NULL data at will.
This is a design flaw though, because if you have an index the data should NEVER be null. Anyway, dropping the keys will allow you to insert the data.
--Stole this from a moderator
I will only tell you how to do it, not do it for you.
Unless, of course, you want to hire me to do work for you.