Compulsory product registration: importers must register notified electronic goods with BIS before import or present MeitY exemption. Importers must ensure notified electronic and IT goods conform to Indian Standards and are registered with BIS before import or have MeitY exemption; registration follows product testing at BIS-recognized labs and permits use of the BIS Standard Mark on product and packaging (stickers prohibited). Repaired, refurbished and second-hand notified items require registration or prior MeitY permission and may be detained if unregistered. Customs officers must verify BIS certificate coverage, proper Standard Mark display, upload of BIS certificates to e-sanchit, and refuse clearance of non-complying goods, referring issues to MeitY.