Transaction codes for 75/25 rule
To use the 75/25 rule functionality, you must set up two transaction codes in the tax group. One transaction code for 25% of the amount and another transaction code for 75% of the amount.
Before you can set up the transaction codes for 75/25 rule, you must use the Screen Designer during installation to display the Adjust Amount and Adjust Percentage field.
To set up the transaction codes in the tax group: