A travel request is a request to a travel agency to create a trip on your behalf, typically for a complex trip involving multiple destinations. The process is known as "assisted booking".
If you have created a travel request in the Travel tool, you can create an expense report from it in the Expense tool. To do so, you use the Mission Order option on the Home tab or the Create an Expense Report tab:
To create an expense report from a travel request:
On the Home tab or the Create an Expense Report tab, click the Mission Order option in the Create an Expense Report list.
From the Mission Order field, select the travel request for which you want to create the expense report.
The Expense Report Name field is automatically filled in with data from the travel request, but you can change the name if necessary.
(Optional) Add a comment to provide more details about this expense report.
To add expense items to the report, continue from Completing an Expense Report.