3814007 - Why am I unable to assign an approver to a test user even though the Expense Approver permission is assigned?

Why do I receive 'Invalid Approver' when trying to add an approver to a test user? I have the Expense Approver role.

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Expense > User Administration

Concur Expense all versions

An Approver does not appear when trying to assign them as an Approver for a test user. , KBA , CON-EXP-ADM-TUA , Test User Admin , Problem

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