What are the Rounding Rules for travel and expenses (Oracle PeopleSoft) when using per diem?

Hello,

What are the Rounding Rules for Travel and Expenses (Oracle PeopleSoft) when there is a calculation code assigned to the location? I am on tools release 8.60.

For a brief background on our setup, we have defined multiple locations on the EX_PER_DIEM_DTL under one expense type. All the locations are using a defined calculation code to calculate 75% of the total per diem amount. When users select the expense type on EX_SHEET_ENTRY, the amount that is populated on EX_SHEET_LINE is rounded to the nearest dollar. For example, per diem amount should be 55.50 but it is returning 56.00. Is there peoplecode updating this or something in setup that I missed?