I need to modify the creation time of a VF11 transaction which is Cancel Billing Document.
I know there is a user exit for the billing side called USEREXIT_FILL_VBRK_VBRP where I can specify the values I want for ERDAT and ERZET. When I modify the UserExit, it works great when an Invoice is created via VF01. However, it does not not work when entering a VF11.
Is there a seperate UserExit for VBRK entries that are created with VF11?
Is there another way that I can accomplish my goal of specifying those two fields when entering a VF11 transaction?