The Operational Damage Limits Notice (ODLN) contains a list of condition items that must be checked before the ULD is used. Should the damage on any ULD exceed the listed items, then the ULD may not be used for the transport of cargo or baggage on an aircraft.

This requirement is stated in IATA ULD Regulations, Sec. 2.6.2. It is the duty of any person working on or around ULDs to ensure that any unit with damage exceeding the allowable limit shall be immediately isolated from serviceable units, identified as unserviceable, and sent for repair.