Hi, can anybody tell me the differences and resulting behaviour of axapta within the Job scheduling form in Production module between: 1. NOT marking neither “Schedule references” nor “Synchronize references” 2. marking only “Schedule references” 3. marking both “Schedule references” AND “Synchronize references” I did some tests, read all the manuals and online-help but it is not clear to me. I think, leaving all check-boxes unmarked does not re-plan depending sub-productions, but the difference between (2) and (3) is still a secret to me. Thank your very much!