You are creating an expense report and adding mileage, however the fields does not support decimals.
SAP Business ByDesign.
Reproducing the Issue
Go to Travel and Expenses work center.
Click New Expense report on behalf.
Enter required data.
In the Mileage Total Distance, the field only accept Integer numbers.
The following error is raised if you add a decimal number: 'Only integers are allowed'
It is not possible to enter mileage with decimals in ByDesing Expense and Reimbursement Management. The purpose of entering this mileage is to get a flat rate defined either by you or by the government. As this flat rate is normally defined per mile/km there is no necessity to enter decimal places.
Mileage. Distance. Integer. Expense Report. ER. , KBA , AP-ERM , Expense and Reimbursement Management , How To