21.  Less: Travel advance encumbrance number If funds were advanced to the traveler, enter into these fields the travel advance encumbrance number, which begins with a "T" and the dollar amount of the travel advance. Note: The travel encumbrance number and dollar amount can be found on the monthly AMO90 reports. The travel expenses listed on the TEV should always be charged to the same account(s) from which the travel advance was issued and encumbered against.