3153391 - Not able to change first and last name in transaction BP as fields are greyed out

Try to change a BP with the employee role but fields like first name and last name are greyed out.
In all customizing the fields are set to optional.

SAP S/4HANA all versions

Last name, first name, greyed out, BP, HR, employee data , KBA , AP-MD-BP , Business Partner , Problem

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