This article describes how to reject a Travel Expense that has been approved by mistake. In this case the rejection/resetting must be done by an Administrator in APP, or by the Payroll user in APM.
Solution
Open Adonis Personnel Manager > Payroll Module.
Click Process > Travel Expenses.
In the window that opens select the Travel Expenses tab.
Filer by the Document ID or PIN.
Select the needed records.
Click Reject.
Once this is completed you can further work on this document in APP.