Performance document not available in Compensation Plan

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Hello experts,

I have successfully launched a compensation plan. In this plan, I have enabled a standard column called Performance Document, which should make available the performance document for the selected employee, as you can see in the attached screen.

However; the performance document tab is disabled, despite the performance document is available for the selected employee.

How can I view performance document from compensation plan?

Thanks in advance for your time!

Kind Regards,

Valerio