[Koha] Acquision and MARCs

Hello do i need to edit the Marc Records at some time or they are automatic when data is entered.? Am bagged by this long route of procurement and vendors choice while inputing books yet these books have been in the library and quite hard to track vendors and the accountability history. Give methe shortest route collegues -- .............. Smith Matsiko Sparklink systems (u) Ltd Plot 42 Buganda Rd, # 3463 Kampala Uganda mob:0752 690319