Undertaking in lieu of bond permitted to facilitate customs clearance, subject to prescribed conditions and security safeguards. Acceptance of undertakings in lieu of prescribed bonds is temporarily authorised for specified importers and exporters to expedite customs clearance; undertakings must mirror prescribed bond content, be signed and submitted from the registered IEC email, include a commitment to furnish the formal notarised bond within the extended period, and do not substitute for security where mandated. Movement of warehoused goods and change of ownership after warehousing is limited to specified categories, and Customs will record relaxations and require replacement of undertakings by proper bonds.