Employee Name to be populated automatically based on Employee Number in AP invoice line

Dear Experts,

While creating AP invoice, we have created employee number and employee name DFFs under Projects. Employee Number and Employee name is assigned with respective value sets, hence, employee number and Employee name LoV is available for selection.

But, the business requirement is once employee number is selected, employee name should be populated automatically to avoid wrong selection of employee name.

Can you please provide the way to achieve this requirement? I have attached screen shot for your review.

In AP invoice line, in employee number LoV,

in employee name LoV,

Employee Number DFF

Employee Number value set

Employee name DFF