Module- SAP HR Position infotype Obsolete updation (T.Code: PO13)I am not able to upload the data through LSMW. It is getting recorded but while processing system does not skip to this infotype, which is in the 11th line of the menu. Only 10 Infotypes are listed on the front screen for 11th one has to go either thro' page down or click the scroll bar.

I am new to White box testing and would like to know how i could learn to write white box code to give input to the code and get the output from the code to test the functions written by developers. Is there any website or book that would be more helpful to understand the concepts. I have programming knowledge wrt to developing windows based applications, and not too much on Console applications.