OMJJ-Copying from 201K
I have copied a new movement type Z01 from 201 and removed the Cost center field name(KOSTL) and made mandatory the GL account field(KONTO) and allowed Tcode MB1A is given.
When i do MB1A, the systems ask to enter the Cost Center as Required entry.
OMJJ field selection affects transaction MIGO only not the MB* Transactions (old ones)
And OMBW affects all the Goods Issue Movement Types and OMCJ affect all the Goods Receipt and Transfer Posting movement types for old transaction codes starting with MB*