You're matching your customer's names to teh FBI's most wanted list, or the control list?
If it is the control list, the istructions are clear as to actions, but not so much as what is a "match". The instructions do state, "...while not identical to any of the names, variations or aliases on the Control List, are sufficiently similar as to suggest that they may be the same individual or entity. We encourage you to err on the side of reporting and to treat such hits as a match to the name on the Control List."
And, "If your institution finds that it has any information concerning an individual or entity on the Control List, we ask that you immediately send an email message to
suspicious.accounts@ny.frb.org identifying yourself and your institution and stating only that you have a positive response to the Control List."