What action is necessary for a traveler to receive their per diem?

To receive per diem, a traveler must complete a travel order. The travel order serves as the official document that outlines the details of the travel itinerary, including the destination, dates, and purpose of travel. This document is crucial because it establishes the terms under which the traveler is authorized to incur expenses while on official duty. Once the travel order is approved, it allows the traveler to access and utilize per diem allowances for lodging, meals, and other travel-related expenses.

While other actions are part of the travel process—such as receiving travel authorization or submitting a travel claim—none of these directly trigger the availability of per diem like the completion of a travel order does. The travel order is fundamental in setting the stage for the entirety of the travel process, including the subsequent per diem arrangements.