Scaling of Negative Tracing Factors 
Use
Negative tracing factors can occur if you did not define the tracing factors as quantities or percentage rates, but take them from the database. For example, a distribution by activity types or statistical key figures .
The scaling of negative tracing factors is only of importance when the receiver tracing factors have different +/- signs.
If part of the receiver has positive and part negative tracing factors, we distinguish between two cases:
If the total of all the receiver tracing factors is greater than zero, then the system credits (without scaling) the receiver as well as the sender with negative tracing factors. In the process, the receivers with positive tracing factors are debited more heavily.
If the total of all the receiver tracing factors is less than zero, the system credits (without scaling) the receiver as well as the sender with positive tracing factors. The receivers with negative tracing factors are thus debited more heavily.
In iterative processing, this can mean that the iteration does not converge, leading to cancellations or incorrect results.
Features
You have the following options for scaling negative tracing factors:
No scaling (1)
Negative tracing factors are allowed for.
Standard scaling (2)
The scaling depends on the total of the receiver tracing factors:
If the total of the receiver tracing factors is positive or zero , then the largest negative tracing factor is set to zero. The other tracing factors are increased correspondingly. This ensures that all the receiver tracing factors are positive .
If the total of the receiver tracing factors is negative , the largest positive tracing factor is set to zero. The other tracing factors are reduced correspondingly. This ensures that all the receiver tracing factors are negative .
Absolute value (negative value becomes positive) (3)
For negative tracing factors, the +/- sign is reversed. This ensures that all the receiver tracing factors are positive .
Negative tracing factors become zero (4)
Negative tracing factors are set to zero. Therefore, you do not allocate costs to these receivers.
Smallest negative tracing factor becomes zero (5)
The largest negative tracing factor is set to zero. All other tracing factors are increased correspondingly. This ensures that all the receiver tracing factors are positive . Receivers, which before the scaling had the tracing factor 0, are given a positive tracing factor.
Smallest negative tracing factor becomes zero, but zero remains zero (6)
The largest negative tracing factor is set to zero. All other tracing factors are increased correspondingly. Receivers, which before the scaling had the tracing factor 0, are given tracing factor 0.
Example of Scaling Negative Tracing Factors
Scal.neg. Tra.fa.
|
1
|
2
|
3
|
4
|
5
|
6
|
Tra.factor Rec. 1 |
-100 |
0 |
100 |
0 |
0 |
0 |
Tra.factor Rec. 2 |
200 |
300 |
200 |
200 |
300 |
300 |
Tra.factor Rec. 3 |
-50 |
50 |
50 |
0 |
50 |
50 |
Tra.factor Rec. 4 |
0 |
100 |
0 |
0 |
100 |
0 |
Total Tra.factors |
+50 |
Note
The scaling of negative tracing factors can be set only for single segments and not for the entire cycle.
The following graphic illustrates a distribution with and without the scaling of negative tracing factors for option 5: The smallest negative tracing factor becomes zero
( )