Note the following when trying to account for voluntary supplementary pension insurance from gross amount.

Create two linked earnings types. Set RDC - Regular pay for first earnings type. Assign it to a negative amount (that is, the amount entered in payroll preparation is negative).Then set another entry where you have to take care to set payment order code 40, work type, earnings type P and the same accounts as for regular work.

The second earnings type entry contains the corresponding negative amount. Since the first earnings type is negative and you multiply it with a negative value (-1), we get a positive value. Plus, set recipient's bank account, payment order ZA, work type EV, earnings type E and amount of gross earnings.