Failed Compensation Plan Import

I have received this error when importing a compensation plan.

Steps that I am following

Exporting Plan

In your test instance, open Plan Administrator. Under Requests, choose Export Setup Data

Enter Request Name – for consistency, use the name of the Plan that you are exporting.

In the Source Operating Unit box, type “P” and then the tab button. This will populate with “P Corporate."

Object Type will stay as Compensation Plans.

select next then select add locating my file for the plan then select submit.

Download the file and save for the import

**Note – to maximize accuracy, only export one plan at a time.**