| To update overall vendor rating |  |
| If you do a full update of the vendor ratings in the Update Vendor Rating (tdpur8850m000) session, the calculation of the overall vendor rating for each business partner is the fourth stage in the vendor rating calculation procedure. The following methods, which you specify in the Methods/Factors field of the Vendor Rating Parameters (tdpur0100m800) session, are used to calculate the overall vendor ratings: Moving Average For more information, refer to Moving average. Smoothing Factor For more information, refer to Smoothing factor. The overall vendor rating is calculated by the Update Vendor Rating (tdpur8850m000) session and displayed in the Vendor Ratings by Period (tdpur8102m000) session and the Vendor Ratings by Criterion (tdpur8102m100) session. Before ERP LN calculates the overall vendor rating, the period rating for the newest business partner/period combination is calculated. ERP LN calculates the period rating for the business partner/period combination as follows:

    Period rating = sum (CR * AW)

                                     CR
                                     Both the objective ratings and the subjective ratings for the newest business partner/period
    combination are taken into account. The objective ratings are retrieved from
    the Objective Ratings (tdpur8106m000) session and the subjective ratings
    from the Vendor Ratings by Period (tdpur8102m000) and Vendor Ratings by Criterion (tdpur8102m100) sessions.

                                     AW
                                     The actual weightings are calculated in the first stage of the calculate/update vendor rating
    procedure. The objective criteria weightings are retrieved from the Vendor Rating Parameters (tdpur0100m800) session and the subjective
    criteria weightings from the Vendor Rating Subjective Criteria (tdpur8190m000) session.
Example The following criteria apply to a business partner in the newest period:
Criterion | Rating | Actual Weighting
--- | --- | ---
Delivery time | 90 | 30%
Quality | 80 | 40%
Customer Service | 50 | 20%
Delivery Service | 70 | 10%
The period rating for this business partner/period combination is calculated as follows:
    Overal rating = (90 * 30%) + (80 * 40%) + (50 * 20%) +
                    (70 * 10%) = 76%
ERP LN writes the results of this calculation to the following sessions: Vendor Ratings by Period (tdpur8102m000) Vendor Ratings by Criterion (tdpur8102m100) In this case the Criteria Type field and the Criteria field are empty in the Vendor Ratings by Period (tdpur8102m000) and Vendor Ratings by Criterion (tdpur8102m100) sessions to make clear that the displayed vendor rating is the overall rating for the business partner/period combination. Related topics To calculate vendor ratings Moving average Smoothing factor Overview of vendor rating |