There are several reasons a traveler may wish to reduce the amount of a reimbursement:  

• expenses are being charged to a research grant and the traveler may want to spend less on travel in order to have the funds for supplies and equipment; or
• the traveler has agreed to certain limitations on expenditures for budgetary reasons.

To reduce the CASH reimbursement by a given amount, select the Reimbursement Reduction expense type, enter the amount as a negative, and type the reason for the reduction in the expense Comments field.