Please refer to HUD notice 09-20 http://www.nthdc.org/media/eiv/EIV%20System_HUD_Housing_Notice_09-20.pdf for more details regarding EIV reports.
The Failed EIV Pre-screening Report and Failed Verification Report are required monthly. There are other reports required but the frequecy is not monthly. Please refer to your policies and procedures which must outline the use and frequency of the EIV reports.