At present there is a one to one relationship between Expense reports and Travel Requisition however, this limits an Expense report to "one trip". The reality is for a lot of employees are travelling multiple trips in a month and will be submitting expenses relating to one or more trips at the same time. Furthermore, for expenses incurred on credit cards where there can be a delays in receiving the credit cards line, the timing on when expenses can be claimed varies considerably . Ultimately the travel requisition is matched at the line level, not the header level thus limiting an Expense report to one travel requisition does not make any sense either from a technical point of view or the user experience.