Need suggestion for using AC 21 - Does experience need to match? in AOS & CP : General Posted July 16, 2013 · Report reply Just don't inlcude the requirements when you put together an AC21 notification. Or don't notify until you have the required experience. Thanks Belle, I have already gained Bachelors + 13 years / Masters + 10 years experience. My only concern is; my current employer's GC ( my PERM) requirement was Bachelors + 5 years, but the prospective employer's requirement is Bachelors + 10 years. If I don't mention job requirement in AC21 letter, will USCIS raise an RFE and issue NOID on my I-485 later down the road because of this difference ?