How to Upload Multiple excel file with macros in sap?Can anyone share some source code

Hi All,We have configuration that Whenever someone tries to release or cancel release of Purchase Order in ME29N mail gets triggered to concerned person defined according to release code. Now I have requirement to unrelease and delete the line items ...

HiCan I know how the automatic creation of PO occurs in Transportation any exit or badi for that.

I want to change parameter to select option in vk12. Give some solution