Solution : https://service.sap.com/sap/support/notes/1015398 (SAP Service marketplace login required)
Key words :
trip expense approval mail/task, terms trip expense approval reason, trip expense amount displayed, currency formatting rules, output length equal, trip amount, nearest integer, type dec 23, decimal places, /osp/do_expense_amount
Related Notes :
1041886 | Duet 1.0 SP03: Release Information Note |
993562 | Duet 1.0 SP02: Release Information Note |