Vendor Evaluation - Periods of time considered

Hi dear all!

I have a question regarding how SAP calculates some subcriteria in Vendor Evaluation.

1- Price Level: How many periods are taken into account? When running vendor evaluation, for this subcriteria, some purchasing orders that are two or three years old have been considered. Is this correct? Is it because we are running vendor evaluation for the very first time?

2- Price History: current year and previous year are referred to fiscal years?

3 - Complaints/ Rejection Level: How many periods (months) are taken into account? If a vendor has two Q2 type QN last month but none this month, they are summarized or not? For annual business volume fiscal year is considered or last twelve months?

4 - Is there any difference between running vendor evaluation for first time in the system and the subsequent times?

Thank you very much for your time and your answers!

Best regards,

Eliana