I've looked in a few online dictionaries, and I don't see any definitions of "anachronism" that seem to encompass this situation. However, I feel like, etymologically, this term could be used in the following way:
Since some construction was begun before the designs were truly complete, I have added four days to our estimate to account for the inefficiencies caused by these various anachronisms.
It seems like it should be able to be used this way, but I'm not aware of any precedent. If this cannot be a usage of "anachronism," can you suggest a word that could be used in this context? I'm mainly looking for a noun that refers to actions that occurred in an order other than the proper/established order.