Class and method for infotype updation

Hi All,

I am working on the salary change workflow. I want to update infotypes 0000, 0001, 0008 based on the manager's decision.

I am stuck up in the updation of infotype after approval. Is there any standard Class and method to do it? or any standard BO

to do it? Or do i have to create Custom class? Please tell me as soon as possible.

Thanks in advance,

Devananda A J