Welcome to the forum.
I believe that the form you are referring to is the "Certificate of Authenticity" for the issue of a FAR 61.75 based on certificate.
However, the validation of a foreign CPL only enables you to get a FAA Private certificate issued under 61.75. You cannot get a 61.75 Commercial validation.
If you want a FAA CPL you need to complete the FAA requirements laid down in 61.127 and 129, complete the CPL written and IR etc.
If I have misunderstood your question, I apologize.