2525218 - Wrong overall calculated rating in PM form - Performance Management

SAP Knowledge Base Article - Public

# 2525218- Wrong overall calculated rating in PM form - Performance Management

### Symptom

Calculated rating showing in the form is incorrect based on the average rating formula which is the summation of rating times weight. The ratings are coming only from one section of the form for instance the goal section of the form.

### Environment

• SAP SuccessFactors Performance Management

### Reproducing the Issue

Lets take a screnario as below:

• Ratings are only from the Goal section of the form with 100% section weight.
• Below are the 12 goal ratings and weights:

Rating               Weightage

======          =======

6.0                    10.0%

6.0                    10.0%

4.0                    10.0%

4.0                    10.0%

4.0                    15.0%

10.0                  2.5%

5.0                    5.0%

7.5                    2.5%

5.0                    10.0%

8.0                    10.0%

3.0                    5.0%

7.0                    10.0%

• Calculated rating shows 6.47 instead of 5.44 following the average formula.

### Cause

Goal section has a different rating scale used in the form. The rating will be normalized to the main rating scale configured in the form.

### Resolution

The Calculated Rating that will be displayed in the form is the normalized rating. The calculated rating using the goal rating scale will be normalized to the main rating scale of the form.

Below is explanation how it works for the example scenario above.

Main Rating Scale of the form: (4,6,7,8,9)
Rating Scale of the Goal Section: (1,1.5,2,2.5,3,3.5,4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5,10)

Normalization Formula: (Rating - Section_ScaleMin) / (Section_ScaleMax - Section-ScaleMin) = x

Normalized Rating = x * (ScaleMax - ScaleMin) + ScaleMin

where Rating= Rating calculated using the average formula (5.44)

Section_ScaleMin = Minimum rating of Section rating scale

Section_ScaleMax = Maximum rating of Section rating scale

ScaleMax = Maximum rating of Form rating scale

ScaleMin = Minimum rating of Form rating scale

In this case, the calculation goes as below:
(5.44 - 1.0) / (10 - 1) = (4.44 / 9 ) = 0.4933333
0.493333 * (9 - 4) + 4 = 6.466666

Hence the overall calculated rating is displayed as 6.47