Please tell me the use of "FORM KOBED_002" and "FORM KOBEV_002??
I am quite sure that you are talking about FORM KOBED and FORM KOBEV which is just the two FORMs under which the formula is encapsulated for picking the price.
<b>Now use of these FOSRMs</b>,
In SAP, whenever a coding is done or a formula is written we do it by using FORMS. The purpose of encapsulating the code under a FORM is because we should have an option to call the same Form in the some other requirement. So instead of writing the program all over again we just call the FORM with its name.
Being a Functional consultant we do not have to worry about the coding part but these FORM and ENDFORM contains the relevant formulas for the specific business requirement.
KOBED_002 and KOBEV_002 are just the name given under which the Formula is written. In the above case FORM KOBED_002 the formula written under it means that system would first check whether the item category attached for an item in that condition item number in SO is relevant for pricing or not.
Do not bother about FORM KOBEV_002 as it does not hold any meaning particularly for this program.
Do revert for further clarifications.