Bank Guarantee exemption narrowed to specified serious violations; affidavit and verification required for authorization holders. The Circular limits denial of Bank Guarantee exemption to authorization holders booked, in the previous three financial years, for serious violations: mis-declaration/mis-statement/collusion/willful suppression/fraudulent intent causing duty evasion; clandestine or unauthorized removal warranting confiscation; wrongful claims of CENVAT credit, rebate, refund, drawback or export benefits; non-deposit of collected duties; and non-registration with intent to evade. Applicants may be required to submit an affidavit affirming absence of such bookings under Customs, Central Excise, Service Tax, FEMA and the Foreign Trade Act, with random verification by Commissioners.