What percentage of a traveler's check must be spent when it is used for a purchase?

When a traveler's check is used for a purchase, the requirement is that 100% of the check's value must be spent in that transaction. This means that the entire amount of the check should go toward the purchase, rather than a percentage of it. The purpose of traveler's checks is to provide security when traveling, allowing individuals to pay for goods and services easily without the need for cash. Therefore, to get the full benefit and usage of a traveler's check, it must be fully utilized at the time of the transaction. This aspect reflects the intention behind using traveler's checks, emphasizing their role as a secure means of payment rather than just a partial payment option.