Pro Rata calc. based on monthly period of 30 days every period

PY - NL:

Hi,

I want to create a pro rata calculation based on a 30 days calendar. So every month has 30 working days. I know that table T510H offers posibillities combined with operation KDIVP, ADIVP and SDIVP. Can I use the above mentione operations instead of operation TSSOLL or does SAP not support this at all?

How must I use it and what effect will it have, If a WPBP split accurse on 28th of February or 31th of January ?

Can anyone help me?

PS: I know it will also effect the time part of customizing.