Why are some airlines coded green and others yellow?
The color-coding is designed as an easy way for you to recognize and avoid policy violations. If a yellow air, car, or hotel is selected, you will be prompted to include a reason code and explanation for your selection in the pop up boxes. Make sure that your explanation is complete to facilitate the approval process for your reservation. If the approver has to reject the request until additional information is provided, you may risk meeting the airline purchase deadline and could lose a discounted fare.