Taxpayer identification number of the community agency that was found on ROCS to have previously served the detainee.
As you'll notice, the FEIN number is an hyperlink. Which means that you can click on any FEIN (agency) that is listed and get detailed information on the detainees served by that specific agency. You are taken to individual level data for each detainee that was found on ROCS to have been served exclusively by the agency you choose to work with.