What limitation exists regarding the travel card when using DTS?

The correct answer highlights that the travel card's usage is constrained by the traveler's credit limit, which determines the funds available for travel-related expenses. This means that while travelers can use their travel card for authorized expenses, the total amount that can be charged is not unlimited; it is subject to the credit limit assigned to the cardholder. Consequently, if an individual's expenses exceed this limit, they may have to cover the excess costs out of pocket or find alternative means of payment.

Understanding this limitation underscores the importance of planning and budgeting for travel-related expenses effectively. It also shows that travelers should be aware of their credit limits to avoid potential financial shortfalls when on travel.

The other options do not accurately reflect the restrictions of the travel card. The card cannot be used for personal expenses, it can be utilized for costs incurred while traveling domestically and internationally, and not all travel-related expenses are automatically covered by the card since they're dependent on the credit limit.