How to use divisor 30 
How to use divisor 30
Procedure for using divisor 30
The standard SAP R/3 system is set to use the divisor 30 for all of the company calculations. As such, if you wish to use the divisor 30 for all of the company calculations, you only need to set the settings related to the specific use of the divisor 30.
To do this, see:
Define relevant wage types for divisor 30 Define all adjustment types by absence class