Transit of Bhutan-bound import cargo requires an ICES-filed Letter of Guarantee, RFID sealing, and system-verified exit at Jaigaon LCS. Clearance of Bhutan-bound transit imports via Jaigaon LCS must be against a Letter of Guarantee issued by Royal Bhutan Customs and filed in ICES; Bhutan importers register in ICES and present LOG with BL/AWB, invoice and packing list for classification and duty assessment. Docks/CFS officials verify container and seal numbers, affix/record RFID/ECTS seals supplied by the importer, record vehicle details, give 'Out of Charge' in ICES and hand signed LOG copies to the importer for border transit. At Jaigaon LCS officers verify LOG and RFID seals in ICES and record cross-border completion, while discrepancies trigger examination and potential invocation of the guarantee.