3819121 - Why I receive an application error when I am trying to modify an Authorized Approver from one to another?

When I am trying to modify an authorized approver from one to another, I get an application error. How do I resolve this error? User-added image

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Application error when modify an Authorized Approver from one to another , KBA , CON-EXP-ADM-WFL-WL , Workflow , Problem

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