The third-party system performs payroll without retroactive accounting. Therefore, you want to collect the differences from the retroactive accounting run and transfer them with the corresponding original period to payroll. To do this, choose retroactive accounting option R4.

You also want to activate the change validation and delimitation functions for wage types. This can cause problems, since the information (wage type) is condensed in such a way that the result could be interpreted incorrectly.

• If this information is the only information available for the wage type, then it could be interpreted as follows:

To solve this problem, you should activate the DT wage type option for retroactive accounting. The values for the Total Gross Amount may appear as follows:

Payroll period	Total Gross Amount wage type from the results table (RT)	Total Gross Amount wage type from the table ($DRT)
01 in 01	3 000.00	------------
02 in 02	------------	------------
01 in 03	-----------	------------
02 in 03	-----------	------------
03 in 03	3 500.00	1 000.00
03 in 04	------------	------------
04 in 04	< ... <	-3 500.00

1. In the 03 in 03 payroll period, the retroactive accounting difference of 1,000.00 and the amount of 3,500.00 are shown separately. This clearly shows that the current value of the wage type is 3,500.00 for the 03 in 03 payroll period.

This information would be of particular importance for the payroll run in the 04 in 04 payroll period if the wage type had retained the value of 3,500.00 and no longer occurred because the change validation function was active. It would be unclear whether the employee is entitled to 3,000.00 or 4,500.00.

2. The change validation function sends the delimitation information to the "04 in 04" payroll period even though the wage type no longer exists in the 03 in 04 payroll period.