Mesh users can edit an expense based on their permissions, expense type, reimbursability, and the status of the expense. Generally speaking, as the expense 'matures' (i.e., moving from the 'Incomplete' to the 'Approved' status), the number of users who can modify it decreases until edits are no longer permitted.

If editing is allowed, navigate to 'Expenses', select the 'All' tab, use filters to find the expense, click an expense, then click the three dots in the upper-right corner and select 'Edit Expense'.

A warning message explaining the impact of the changes will appear, allowing you to modify relevant fields such as the merchant, date, amount, and currency. Change the relevant details and click 'Save'.

As soon as you introduce the changes and save the action is logged in the expense audit trail, aka History.

Note: The first image highlights the capabilities of power users, including features like 'Approve on Behalf' and 'Reassign'. These permissions are not available to all users.