How to work "Submit Rates-based Salary Process Job" batch process?or how to create salary in bulk fo

Summary

How to work "Submit Rates-based Salary Process Job" batch process? I hope that using this batch on an employee with a specific grade, the employee will receive a new salary.

Content

Hello, 

I need any help or documentation about the use of "Submit Rates-based Salary Process Job" batch process.

I expected that launch the "Submit Rates-based Salary Process Job" batch process with process mode "Create new salary by recalculating rates values" and on the employee "Pippo", the employee will receive a salary with the amount showed in the pay element "RTA" (pay element mapped with the salary basis). 

The real results was that the "Submit Rates-based Salary Process Job" batch process is completed with the error and the error message is "No Person Assignment found to process"